Why do you discount the desire of the majority of the people living in Monetenegro to be independent?
The EU (before it was called that) and the US were unanimous about keeping the former-former Yugoslavia intact. The State Department was publicly adamant about keeping the territorial integrty of the SFRY, yet tacitly it allowed it to break up. Clearly, that was all smoke screen.
If you read up on the history of Milo Djukanovich, you can see clearly how the foreign interests "helped" him morph from an opportunistic communist apparatchik allied with pro-Serb, pro-Miloshevich block, into an anti-Serb, pro-independence "pragmatist" a la his buddy Djindjich.
Milo went to speak with Sec. Cohen in late 1999 where he brokered a "deal" of cooperation (and compensation!) in the forthcoming NATO aggression that was tacitly choreographed as the war in Iraq was of more recent memory.
As we say "nothing happens unless God wants it to happen" we can just as easily say that nothing happens in the world politics without the US either allowing it or helping it. In either case, it is US foreign interest, backed by US financial interest, that makes small banana republics do nothing without the approval of the Big Uncle from America.
You have to understand that Milo Djukanovich was directly responsible for the aggression on Dubrovnik, yet he remains uncharged for any war crimes. How convenient. He may be a crook, but, as President Roosevelt would say, "at least he is our crook." :)
Would you support the separation of Southern California, Texas or Florida etal from the Union due to aspirations for independence from an increasing Latino majority?