WMG / Frontlines: Fuel of War

The Oil Wars have been going on for some time prior to 2024
There was a war in Eastern Europe that we saw from the perspective of B Company, aka "Bad Company", then there were the highly explosive exploits of some Private Military Contractors in Venezuela. These were just the opening salvos. The Russians were defeated in Europe, and China in Venezuela. However, the war was still boiling, just below the surface. A cold war followed, during which the Red Star Alliance and Western Coalition were formed. In 2024, the WC backed a coup d'etat in Uzbekistan, but the RSA found evidence of the Western influence. The Oil Wars have begun...
  • According to the back story available in the War Timeline in the game's Extras section, that's pretty much exactly what happened.
It's the only explanation.