Short answers, pulled from the story.
The Bosnian War is most commonly considered to have started on the 6th of April 1992, when Bosnia and Herzegovina received international recognition and Serb forces began shelling Sarajevo. It ended on the 21st of November 1995 when the Dayton Accords were initialed at Wright-Patterson Air Force Base in Dayton, Ohio; they were formally signed in Paris on the 14th of December 1995.
Estimates suggest more than 100,000 people were killed during the Bosnian War. Over 2.2 million people were displaced, making it the most violent conflict in Europe since the end of World War II at the time. An estimated 12,000 to 50,000 women were raped, mainly by Serb forces.
In July 1995, VRS forces overran the UN-declared safe area of Srebrenica and killed more than 8,000 Bosniak men and boys. The massacre is the only event in Europe since World War II to have been formally recognized as genocide by international courts.
The Dayton Accords, formally the General Framework Agreement for Peace in Bosnia and Herzegovina, were negotiated at Wright-Patterson Air Force Base in Dayton, Ohio between the 1st and the 21st of November 1995. They established the political structure of post-war Bosnia and Herzegovina and were formally signed in Paris on the 14th of December 1995.
On the 5th of February 1994, a 120-millimeter artillery shell struck the crowded Markale marketplace in Sarajevo, killing 68 people and wounding 144 others. It was the deadliest single attack of the entire Sarajevo siege and prompted NATO to issue an ultimatum demanding the removal of Bosnian Serb heavy weapons from around the city.
The UN arms embargo imposed by Resolution 713 in September 1991 fell unevenly: VRS forces inherited the full arsenal of the JNA, while Bosnian government forces were left severely under-equipped. According to Bill Clinton as recorded in Taylor Branch's 2009 book The Clinton Tapes, key European allies privately supported the embargo because they considered an independent Muslim-majority Bosnia unnatural, not for humanitarian reasons.