
Chechnya
In 1998 they got everything they ever wanted: de-facto independence with a perspective for referendum in 10 years, their own elected governement, even the oil. Then they decided that it's not enough and attempted to add a neighboring Dagestan to their land. At about the same time, 2 appartment buildings went down in Moscow and (don't remember for sure, but probably Leningrad). NOthing was proven, but the Second Chechen War got under way.