User blog comment:Callofduty4/Black Ops 2 campaign demo, much info released/@comment-65.128.254.167-20120523070705/@comment-2040488-20120523130259

But the Modern Warfare series plays after BO and before BOII, so they could be combined into one codiverse (see what I did there :P). Not mentioning WW3 doesn't meant it didn't happen, the game has only been confirmed for about a month.