Abandoned City "Where It All Began"

A few years after the crash incident, the whole world was trying to investigate the abandoned city, the USSR sent groups of Spetsnaz troops, and the UN did the same. The USSR and UN got in a firefight, near a compound, Some civilians started to enter the zone as well, A mutation virus "Meatball Virus" started to cause problems, The USSR is the most powerful force, UN falling behind. A group called the "Dusties" Has taken refuge in the area, making quick alliance's with the UN and USSR. It's almost as if the next world war is rising. But fighting over dominance will be their last concern soon...