Very, very, very pissed off third world nations who practically stole, pirate, and any unsavory thing to get technology used by the first/second world nations with a very intense hatred of the first and second world due to how much they screwed everyone else for essentially two/three centuries. Think of an alliance of nations that are essentially the USSR during WWII, have tendencies of the Nazis, and have much of their populous brainwashed into incapable of compromise or seeing alternatives to 'crushing the oppressors' while carrying out that objective through any means possible set by their leaders.

Crush the opposition to an archology cluster? They carpet nuke that cluster and move on. Bash through that line? They would drown the defenders with bodies and wreckage while using Geneva illegal weapons like napalm with bits of radioactive cobalt in them or directed sonic weapons that liquify flesh in an instant while leaving no prisoners. They understand the concept of morality but chose to ignore it. Many of them are so blinded by propaganda and the 1984's 'good History' teachings that many don't see the First/Second World nations as people anymore, just monsters to be killed. Many who say otherwise are either dead or defectors.

The UNA's near-infinite variable projections indicated a huge 98% possibility that the CON would collapse much like the USSR did when it fell in 1991. Instead the CON start a war that no one could imagine. By the time the tactical nukes were used in late 2110, the UNA high command thought that the CON would then instead fall apart in violence. When the TacNukes were used in the Battle of Mexico City however, all hope for a non-holocaust end of the war died.