Neutral country
Neutral country is a concept whose rules are spelled out in sections 5 and 13 of the Hague Convention of 1907, yet it remains one of the most contested labels in international relations. What does it actually mean to be neutral? Is it enough to stay out of the fighting, or must a nation also withhold trade, close its ports, and refuse to share intelligence? The answers vary dramatically from one capital to the next. Switzerland has carried a gun since 1815. Costa Rica dissolved its army entirely in 1949. Ireland quietly passed weather reports to the Allies during the Second World War while interning both Allied and Axis pilots who crash-landed on its soil. These contradictions are not accidents or hypocrisies. They are the product of centuries of legal argument, geopolitical pressure, and careful national calculation. The questions this documentary will follow are simple: what do neutral countries owe the world, what does the world owe them, and how do those obligations survive contact with actual war?
The Hague Convention of 1907 is the foundational document that defines what belligerents can and cannot do to a neutral power. Under its terms, armies at war may not march across neutral territory, may not recruit neutral citizens, and may not transport weapons through neutral soil. The wounded, however, may pass through. Naval vessels of warring nations are permitted to use neutral ports for a maximum of 24 hours, with narrow exceptions for repairs or if an opposing ship is already docked.
Beyond the Hague framework, neutrality is recognized in several different ways. Switzerland and Belgium had their status acknowledged by the signatories of the Congress of Vienna. Austria had its neutrality guaranteed by the four powers that occupied it after the Second World War: the United States, the United Kingdom, France, and the Soviet Union. Finland's arrangement came through a bilateral treaty with the Soviet Union during the Cold War. Turkmenistan's was formalized by a United Nations declaration on the 12th of December 1995, a date the country now marks as a national holiday.
Codeification at home varies just as widely as recognition abroad. Austria and Japan both embed their neutrality in their constitutions, though with different levels of specificity. Austria's constitution bars it from hosting any foreign military bases. Japan's bars participation in foreign wars. Sweden, by contrast, never codified its neutrality in any formal legal instrument, which gave it the flexibility to allow German troop movements through its rail network during the Second World War, a concession that a more rigid legal framework might have prevented.
Catherine the Great organized the First League of Armed Neutrality in 1780, bringing together minor naval powers to prevent the Royal Navy from inspecting neutral shipping during the American Revolutionary War. Scholars like Carl Kulsrud argue the concept predates even that: as early as 1613, Lubeck and Holland had joined forces to protect their maritime trade from wartime entanglements. The Americans viewed Catherine's league as a gesture of Russian friendship and sympathy.
The Second League of Armed Neutrality, formed in 1800, brought together Denmark-Norway, Prussia, Sweden, and the Russian Empire with the same goal of shielding neutral ships from Royal Navy searches. Because the league made no mention of French interference with neutral shipping, the British interpreted it as a pro-French alliance. In 1801, they attacked and defeated a Danish fleet at the Battle of Copenhagen. After the death of Tsar Paul I that same year, the league dissolved. A potential Third League was discussed during the American Civil War but never formed.
Sweden and Switzerland became the most celebrated practitioners of armed neutrality, each maintaining it through both World War I and World War II. The Swiss have not been at war internationally since 1815; the Swedes since 1814. Edwin Reischauer put the logic plainly: "To be neutral you must be ready to be highly militarized, like Switzerland or Sweden." Switzerland's armed neutrality was so rigorously maintained that the country refused to join the United Nations until 2002. Sweden held its policy for more than two centuries before applying to join NATO in 2022 and formally joining in 2024.
Woodrow Wilson argued in 1914 that the United States was not trying to keep out of trouble but to preserve the foundations on which peace could be rebuilt. The country was bound by the Neutrality Acts of 1936 not to sell war materials to belligerents. Franklin Delano Roosevelt persuaded Congress to replace those acts with the Cash and Carry program, allowing military aid to the Allies. In March 1941, Lend-Lease replaced Cash and Carry, effectively ending any remaining pretense of American neutrality.
In Europe, the gap between declared neutrality and actual conduct was equally wide. Ireland supplied the Allies with the date of D-Day by sharing incoming Atlantic weather information that was withheld from Germany. It also secretly allowed Allied aircraft to use the Donegal Corridor, enabling British planes to attack German submarines in the mid-Atlantic. Spain, while officially neutral, sent the Blue Division to fight alongside Nazi forces against the Soviet Union, though Franco restricted those troops to the Eastern Front only. Winston Churchill, Charles de Gaulle, and Franklin D. Roosevelt later praised Franco's secret assistance to the Allies.
Portugal remained officially neutral while actively supplying naval bases to the Allies overseas and selling tungsten to Germany. Sweden made its largest concession by permitting the 163rd German Infantry Division to travel from Norway to Finland by Swedish rail, a decision to aid the Finns in the Continuation War that triggered what became known as the political Midsummer Crisis of 1941. The Holy See made diplomatic concessions to both sides while maintaining the formal requirements of the Law of Neutrality; later historical judgment largely exonerated it despite criticism over its silence on the moral questions of the war.
Three members of the European Union still describe themselves as neutral in some form: Austria, Ireland, and Malta. The EU's development of a Common Security and Defence Policy has put their positions under constant pressure. Since the Lisbon Treaty came into force, all EU members are bound by Article 42.7 of the Treaty on European Union, which requires states to assist any fellow member that suffers armed aggression. The article includes a carve-out allowing neutral members to respond with non-military aid rather than troops, and Ireland's constitution separately prohibits participation in a common defense.
The launch of Permanent Structured Cooperation, known as PESCO, in late 2017 sharpened the debate further. The framework was designed to allow states to opt into specific forms of military cooperation rather than committing wholesale. Ireland's government argued this flexibility permitted participation in areas like counter-terrorism, cybersecurity, and peacekeeping without purchasing aircraft carriers or fighter jets. Some members of the Irish Parliament nonetheless viewed the decision as an abandonment of neutrality. Malta, as of December 2017, was the only neutral EU state to remain entirely outside PESCO, with the Maltese government stating it would wait to see how the framework developed before deciding whether membership would compromise its position.
Switzerland is the most globally recognized example of permanent neutrality. The 1815 Congress of Vienna re-established the country and had its permanent neutrality guaranteed by France, Prussia, Russia, the United Kingdom, and others. Despite its reputation for absolute non-involvement, Switzerland's Armed Forces participated in the U.S.-led War in Afghanistan, which the Swiss Broadcasting Corporation described as the nation's first military deployment since 1815. During the 2003 invasion of Iraq, the United States was permitted to use Swiss airspace for surveillance missions. In 2022, Switzerland adopted European Union sanctions against Russia following the invasion of Ukraine, a notable departure: the country had previously only implemented sanctions created by the United Nations Security Council.
Austria's permanence was imposed from outside. The Federal Constitutional Law on the Neutrality of Austria was enacted in 1955 at the demand of the Soviet Union as a condition of the postwar peace. It bars military alliances and foreign military bases on Austrian soil. Austria joined the European Union in 1995 and participates in UN peacekeeping, threading its constitutional obligations through the EU's evolving defense architecture.
Turkmenistan's permanent neutrality was formally recognized by the United Nations on the 12th of December 1995. Alongside Moldova, it remains one of only two former Soviet republics to maintain that status. At the other end of the spectrum, Costa Rica ratified its demilitarization by law in 2014, more than six decades after dissolving its military in 1949. Tonga, which first declared neutrality in 1845 under George Tupou I and later reaffirmed it, saw Queen Salote Tupou III break neutrality in 1939 and 1941 to align with the Allies; Tonga troops went on to fight in Guadalcanal and the broader Solomon Islands campaign before the country reaffirmed neutrality in 2025.
Neutrality, in political science, functions as more than a simple refusal to fight. At a structural level, it works against the tendency of international systems to sort themselves into two opposing blocs, whether Christian versus non-Christian polities, the Capitalist-Communist divide of the Cold War, or a possible future division between liberal and illiberal international orders. By maintaining states that stand outside any bloc, neutrality helps sustain a world of multiple sovereign equals rather than a polarized standoff between two mutually hostile sides.
Former Yugoslavia made this logic explicit. After the Stalin-Tito split in 1949, the country positioned itself as a buffer between the Soviet bloc and the West, becoming a co-founder of the Non-Aligned Movement. Yugoslavia simultaneously supported South Korea in the Korean War and accused the Soviet Union of starting the conflict, showing how ideological flexibility allowed neutral powers to exert diplomatic influence without military commitment.
Not all claims to neutrality survive scrutiny. The legitimacy of some states' self-described neutrality has been openly questioned, and much depends on how broadly or narrowly a government defines its own obligations. Ireland provides a particularly layered example: it has provided military aid to Ukraine during the Russo-Ukrainian War, contributes active forces to United Nations peacekeeping missions, and holds political membership in the European Union, all while maintaining that it remains militarily non-aligned. The rights and duties of a neutral power were first codified in 1907 at The Hague, but the century since has shown that defining those duties is a permanent negotiation between a country and the world it insists on watching from the side.
Common questions
What is a neutral country under international law?
A neutral country is a sovereign state that refrains from joining either side of a conflict and adheres to the Law of Neutrality under international law. The rights and duties of a neutral power are defined in sections 5 and 13 of the Hague Convention of 1907. Permanently neutral powers are bound by international treaty or their own declaration to remain neutral in all future wars.
What is armed neutrality and which countries practice it?
Armed neutrality is the posture of a state that takes no military alliance with any side in a war but stands ready to defend itself by force against any belligerent incursion. Switzerland and Sweden are the most recognized examples, both having maintained armed neutrality through World War I and World War II. Switzerland has not been at war internationally since 1815; Sweden since 1814, until it joined NATO in 2024.
What was the First League of Armed Neutrality?
The First League of Armed Neutrality was an alliance of minor naval powers organized in 1780 by Catherine II of Russia to prevent the Royal Navy from inspecting neutral ships during the American Revolutionary War. Americans viewed the league as a sign of Russian friendship and sympathy. Political scientists regard it as the first historical example of armed neutrality, though scholars like Carl Kulsrud argue the concept appeared even earlier.
Did neutral countries really stay neutral during World War II?
Most nominally neutral countries made significant concessions to one or both sides during World War II. Ireland secretly shared D-Day weather data with the Allies and allowed British aircraft to use the Donegal Corridor. Sweden permitted the 163rd German Infantry Division to transit its rail network to Finland. Portugal sold tungsten to Germany while providing naval bases to the Allies. Only Andorra, Ireland, Portugal, Spain, Sweden, Switzerland with Liechtenstein, and Vatican City remained neutral to the end among the European states closest to the fighting.
How does European Union membership affect neutral countries?
Since the Lisbon Treaty, EU members are bound by Article 42.7 of the Treaty on European Union, which requires them to assist a fellow member under armed aggression, though neutral states may respond with non-military aid. Three EU members still describe themselves as neutral: Austria, Ireland, and Malta. Ireland's constitution separately prohibits participation in a common defense, and Malta was the only neutral EU state to remain outside Permanent Structured Cooperation as of December 2017.
When did Switzerland join the United Nations?
Switzerland joined the United Nations in 2002, having refused membership for decades in strict defense of its armed neutrality. Despite this long-standing position, Switzerland's Armed Forces participated in the U.S.-led War in Afghanistan, which the Swiss Broadcasting Corporation described as the nation's first military deployment since 1815.
All sources
129 references cited across the entry
- 1bookNotions of NeutralitiesPascal Lottaz et al. — Lexington — 2019
- 2journalPermanent neutrality: A systems-theoretical interpretationAndreas Nishikawa-Pacher et al. — 2025
- 3webSweden and Finland formally apply to join NatoJon Henley — 2022-05-18
- 4press releaseFinland becomes a Member of NATO on Tuesday 4 AprilOffice of the President of the Republic of Finland
- 5newsSweden officially joins NATO, ending decades of post-World War II neutralityMatthew Lee et al. — 7 March 2024
- 6bookThe rights and duties of neutrals: a general historyStephen C. Neff — Manchester University Press — 2000
- 7citationThe Law of NeutralityPaul Seger — Oxford University Press — 2014
- 8bookThe Rights and Duties of Neutrals: A General HistoryStephen Neff — Manchester University Press — 2000
- 11bookChina and Eurasian powers in a Multipolar World Order 2.0: Security, Diplomacy, Economy and CyberspaceHeinz Gärtner — Routledge — 2023
- 12bookInternational LawL. Oppenheim — Longmans, Green — 1906
- 13webArmed NeutralityDictionary.com
- 14webArmed Neutrality Law & Legal DefinitionUSLegal
- 15webSwitzerland – Knowledge EncyclopediaKnowledge Encyclopedia
- 17webThe First League of Armed NeutralityMikhail Vinarov
- 18journalArmed Neutrality to 1780Carl J. Kulsrud
- 21webNeutrality – Department of Foreign Affairs and TradeDepartment of Foreign Affairs
- 23newsThe WWII camp where Allies and Germans mixed28 June 2011
- 24webSweden in World War IIC. Peter Chen
- 25bookWorld War II: The Axis Assault, 1939–1940Douglas Brinkley et al. — Macmillan — 2003
- 27bookPropaganda and Neutrality: Global Case Studies in the 20th CenturyHelena F. S. Lopes — Bloomsbury Publishing Plc — 2023
- 33webLetter
- 35bookNova aproximació a la història d'AndorraJordi Guillamet Anton — Altair — 2009
- 38journalGreat Power Competition in Associated States: The Case of BhutanB. M. Jain — 14 October 2025
- 39bookThe Wangchuk Dynasty: 100 Years of Enlightened Monarchy in BhutanLham Dorji — The Centre for Bhutan Studies — 2008
- 40bookFraming the State in Times of Transition: Case Studies in Constitution MakingLaurel E. Miller et al. — US Institute of Peace Press — 2010
- 41webCosta RicaWorld Desk Reference
- 43webCosta Rica prohíbe por ley participar en cualquier guerraÁlvaro Murillo
- 44journalGhana, the West, and the Soviet UnionDouglas Anglin — May 1958
- 45webNeutral countries in the world in 2020: ideology and statusinstitut-ega.org — 30 June 2020
- 47webBenevolent NeutralityDan Burke
- 48webHow Blacksod lighthouse changed the course of the Second World WarJoe McCabe — 3 June 1944
- 49newsIreland to fund provision of non-lethal equipment to Ukrainian militaryConor Gallagher — 27 February 2022
- 50webIreland will not contribute to provision of lethal weapons to Ukraine27 February 2022
- 51journalIreland 'constructively abstains' from EU arms packageDavid Murphy — 27 February 2022
- 52webKazakhstan’s Leader Makes Neutrality an ArtLynne O’Donnell
- 55webBackground Note: LiechtensteinUnited States Department of State
- 57bookThe Peacetime Use of Foreign Military Installations Under Modern International LawJohn Woodliffe — Martinus Nijhoff — 1992
- 58webAdiós a la neutralidad – La JornadaLa Jornada — Jornada.unam.mx — 27 April 2007
- 60webMoldova says 'Yes' to pro-EU constitutional changes by tiny marginSarah Rainsford et al. — 21 October 2024
- 61webWhy Mongolia wants to 'permanently neutral' can be authorized for an observationTencent News — 22 October 2015
- 62webOman urges dialogue with Iran, stays neutral in regional tensionsReuters — 11 November 2019
- 63webOman: the Switzerland of the Middle EastHarvard International Review — 9 January 2020
- 65webAustralia’s risk in PNG: why the Pukpuk Treaty could backfire3 October 2025
- 66webRwanda becomes a member of the Commonwealth29 November 2009
- 67webSouth Pacific: Samoa—Peace and Neutrality in Oceania8 April 2025
- 68webSamoa: The Switzerland of the Pacific8 April 2025
- 72journalSerbia's Military Neutrality: origins, effects and challengesFilip Ejdus — 2014
- 73webSwitzerland decides to join UNRory Carroll — 4 March 2002
- 74webSwitzerland 'regrets' US sanctions against ICC employees13 June 2020
- 75newsUS allowed limited use of Swiss airspace20 March 2003
- 77newsNeutral Swiss join EU sanctions against Russia in break with pastMichael Shields — 28 February 2022
- 80newsTonga troops end Iraq missionTina Susman — December 5, 2008
- 81webHMAF
- 87newsWings of Thunder – Wartime RAF Veterans Flying in From ArgentinaPR Newswire — 6 April 2005
- 90webChile admits helping UK in Falklands27 June 2005
- 91bookThe Official History of the Falklands Campaign, Volume 1: The Origins of the Falklands WarL. Freedman — Taylor & Francis — 2004
- 92citationMalvinas: Argentina sabía que Chile espiaríaCarlos Torrengo — Editorial of Argentine newspaper Rio Negro — 5 September 2005
- 93newsColombia's legacy with Korea The City Paper BogotáJuliana Saldaña — 2 April 2013
- 94journalThe Colombian Army in Korea, 1950–1954B. L. Coleman — October 2005
- 95newsEl Salvador withdraws last soldiers from IraqThe Jerusalem Post — 7 February 2009
- 96webFinland Sends Defence Material to Ukraine, Considers Sending Weapons28 February 2022
- 97newsSuomi lähettää aseita Ukrainalle – Pääministeri Marin: 'Päätös on historiallinen'Teemu Luukka et al. — 28 February 2022
- 98newsPääministeri Marin: Suomi lähettää lisää aseellista apua Ukrainaan24 March 2022
- 99newsFinland to provide more defence materiel assistance to Ukraine19 April 2022
- 100journalHawaiian Neutrality: From the Crimean Conflict through the Spanish-American WarDavid Keanu Sai — 2015
- 101citationThe integration of the princely state of Hyderabad and the making of the postcolonial state in India, 1948–56Taylor C. Sherman — 2007
- 102journalNative Americans in World War IIThomas D. Morgan — 1995
- 103bookThe Heartbeat of Wounded Knee: Native America from 1890 to the PresentDavid Treuer — Riverhead Books — 2019
- 105journalThe Forgotten Friendship: Israel and the Soviet Bloc 1947–1953Ilana Kass — September 1977
- 106newsIsrael sold weapons to Argentina at height of Falklands War, reveal declassified Foreign Office filesDavid Blair — 24 August 2016
- 107bookThe Asian Century: A History of Modern Nationalism in AsiaJan Romein — University of California Press — 1962
- 108bookBritain and the United States Neutralize Spain, 1940–41Timothy W. Crawford — Cornell University Press — 2021
- 109bookForeign Relations of the United States Diplomatic Papers · Volume 3United States. Department of State · 1961
- 110webFranco & the Jews
- 112newsKlart: Sverige skickar vapen och skyddsutrustning till UkrainaAdelina Storkaas — 28 February 2022
- 113webNeutral countries support Ukraine against Russian warBeyza Binnur Donmez — 28 February 2022
- 114webHär är vapnet Sverige skickar till Ukraina: "Kommer ge effekt"Jacob Ruderstam — 27 February 2022
- 115newsSverige skickar fler vapen till UkrainaNils Stahle — 23 March 2022
- 116webSweden signs application for NATO membershipAditi Sangal et al. — 17 May 2022
- 117webInside Tibet1943
- 120newsUkraine Parliament Ok's neutrality bill4 June 2010
- 121webUkrainians complete mission in Iraq11 December 2008
- 122newsUkraine votes to drop neutral status23 December 2014
- 123webРозвиток особливого партнерства України з НАТО – Україна – НАТО12 April 2019
- 124webРада закріпила в Конституції курс на ЄС і НАТО7 February 2019
- 125webUruguay (01/05)
- 126bookLatin America during World War IIThomas M. Leonard — Rowman & Littlefield — 2007
- 129journalEurope's Détente and Yugoslavia's DeclineRinna Kulla — 2013