It's American policy and it's been pretty consistent since the first President Bush right up through now. GHW Bush recognized the former Yugo entities as sovereign nations, coordinated international response, and told Slobo that the US would use force if he started his ethnic cleasing act in Kosovo.
The current President Bush has done a great, but largely unheralded by the media & our "elites" (big surprise), job in the Balkans. He's brought US troop strength from a high of 30,000 down to less than 2000. The Europeans now are running the show and providing most of the troops & resources. He kept the conflict in Macedonia from expanding and established a lasting peace. There have been no new wars. Milosevic was kicked out of office and into the Hague from which he descended into the infernal region. From a basically hostile Yugoslavia run by a klepto-commie cum dictator, we now have six nation-states; all of which are now democracies and four of which (Slovenia, Croatia, Bosnia, and Macedonia) are solid allies who have sent troops to fight alongside us in Afghanistan and Iraq. The US Balkans policy has been a success. The last major item on the agenda is resolving Kosovo's status and that's scheduled to get done this year.
It's Clinton policy idiot. I would like to hear a solution.