Bolivia Rising has a very good explanation of why the conspiracy theories around the US Ambassador to Bolivia and alleged US plans for the "Balkanization" of Bolivia make little sense:
Bolivia Rising: Bolivia, Yugoslavia and US Ambassador Philip Goldberg
I like to see stuff like this. Too often people who come from one general political camp fall into defending - at least publicly - everything that comes out of that camp. Here, though, those who oppose the Santa Cruz-style autonomy movement - both Bolivians and foreign observers - will be much easier to take seriously if they (we) steer clear of facile, baseless attempts to paint "the empire" in too-broad strokes.
PS The Democracy Center also has a good post on this topic.