US supported, and armed Muslims in Bosnia (even when there were peace talks and told them to refuse peace deal that later led into mess and complete blodsheed. Muslim leader Alija Izetbegovic first agreed on peace plan and after went into US, he refused it.)
Also US supported (American president have their monument in capital of Kosovo) in Kosovo. In the begining KLA was classified as terrorist organization by US:
https://en.wikipedia.org/wiki/Kosovo...errorist_group
and later US gave them own state.
If you don't want to read, here it is in short:
The Yugoslav authorities, under Slobodan Milošević, regarded the KLA a terrorist group. In February 1998, U.S. President Bill Clinton's special envoy to the Balkans, Robert Gelbard, condemned both the actions of Serb government and of the KLA, and described the KLA as, "without any questions, a terrorist group". UN resolution 1160 took a similar stance.
But the 1997 US Department's terrorist list hadn't included the KLA.[47] In March 1998, just one month later Gerbald had to modify his statements to say that KLA had not been classified legally by the U.S. government as a terrorist group, and the US government approached the KLA leaders to make them interlocutors with the Serbs.