https://www.pbs.org/wgbh/americanexperience/features/clinton-and-policing-world-bosnia/
In 1995 in central Europe, Bosnian Serbs had begun wiping out the largely Muslim population in their own country. That July, violence reached a climax when Bosnian Serb soldiers overran the city of Srebrenica and murdered more than 8,000 defenseless men and boys. "That was a real shock for everyone," says Kofi Annan, U.N. Secretary-General. "And for that to happen in Europe, many decades after World War II, was something that nobody could sit back and swallow." In response, President Clinton initiated Operation Deliberate Force, a massive NATO military response. "He didn't blink," National Security Coordinator Richard Clarke said. "We knew that day that we had a commander-in-chief who was rational and comfortable with the use of force."