User blog comment:Ravager134K/my theory on the origin of the chimera/@comment-1060384-20100202103146

lol MW2's Storyline is that because of the blast in MW Gen Shepherd lost 30,000 men and no one did anything about it so he hired Makarov to cause a terroist act in Moscow and kill an American soldier so America would get the blame and be invaded by Russia so America could prove how strong they were. Meanwhile Shepherd took control of TF141 to destroy targets in Russia to weaken it and to make sure Russia didn't nuke America but then Cpt. Price ruins his plan by detonating a nuke in the sky destroy all things electrical in America and giving the Americans the upper hand. Then Shepherd gives TF141 two locations to find Makarov one in Afghanistan the other Kazhastan after Ghost and Roach are murdered by Shepherd because they found a computer containing info about Shepherd being behind the war, Soap and Price notice this and go to a base that Makarov told them to go kill Shepherd. During the fight soap gets stabbed and using the knife inside him throws it at Shepherd killing him as it hits him in the eye. Price, Soap and Nikolai escape to an unknown location as the war still happens in America.

Hope that helped ;)