Serbia was destabilised so that the government would not be in a position to negotiate a good deal over its gas reserves, with Russia ending up owning 51 per cent. The bankers also do this, notably the Rockefellar family to deliberately create depressions so that companies and resources can be purchased at pennies to the dollar. Makes economic sense to them.
See this interesting article: Russia, Serbia and South Stream
Naftna Industrija Srbije, Serbia gas company was formed in 1991, the same year the conflict with Serbia began. Coincidence? You make your own minds up.
Later Iraq and Libya's oil resources would be targeted. Syria is on an important route for the gas pipeline called the Levante pipeline. "In May of 2010, the U.S. Geological Service, part of the Department of the Interior, affirmed these results. They predicted that the Levant Basin Province, located between Israel, Lebanon, Syria, and Cyprus, contains 122 tcf of natural gas and 1.7 billion barrels of oil." (Source: http://www.counterpunch.org/2013/06/28/is-the-us-playing-with-gas-in-syria/)