The main leaders during the Bosnian genocide were Radovan Karadžić and Ratko Mladić from the Bosnian Serbs. Karadžić was the political leader who pushed for Serbian nationalism and planned attacks on Bosniaks. Mladić was the military leader responsible for many horrible actions, including the Srebrenica massacre.
On the other side, Alija Izetbegović was the president of Bosnia and Herzegovina and defended the rights of Bosniaks during the war. Eventually, the international community, including NATO, intervened to stop the violence, but it took them a while to respond. Local leaders and outside helpers joined forces to end the conflict and protect the Bosniak people.