Short answers, pulled from the story.
The first conflict began on the 26th of June 1991 when the Yugoslav People's Army initiated action after Slovenia separated from the federation. The final insurgency in Macedonia ended with the Ohrid Agreement in August 2001.
Serb forces committed acts designated as genocide including the Srebrenica massacre which resulted in the deaths of 8,000 Bosniak men in July 1995. The International Court of Justice ruled on the 26th of February 2007 that Serbia failed to prevent genocide committed by Serb forces in Srebrenica.
Estimates place the number of killed in the Yugoslav Wars at 140,000 people while the Humanitarian Law Center estimates that at least 130,000 lost their lives. Civilian death rates ranged between 52% and 56% across the conflicts involving Croatia Bosnia and Kosovo.
After fighting ended millions of weapons remained with civilians who held them in case violence resurfaced and these weapons later appeared on Europe's arms black market. Public reports contained figures of 750,000 missing guns in Bosnia alone.
The International Criminal Tribunal for the Former Yugoslavia established itself as a body of the United Nations located in The Hague Netherlands. One prominent trial involved ex-Serbian President Slobodan Milošević indicted on 66 counts in 2002 before he died in 2006.