Just read this about the gameplay on Black Ops 2, sounds really interesting to be fair...
Strike Force missions
Black Ops II will be the first Call of Duty video game to feature branching storylines, in which the player's choice affects both the current mission and in turn, the overall course of the story. Known as "Strike Force missions", these branching storylines will appear during the 2025 storyline and will feature permanent death. The success or failure of these missions can have ramifications for the wider campaign storyline. Choosing one of the missions locks out the others unless the player begins a fresh campaign.
Strike Force missions allow the player to control a number of different war assets, such as unmanned aerial vehicles, jet fighters and robots. If the player dies in a Strike Force mission, the campaign continues recording that loss, as opposed to letting the player load a previously saved checkpoint. The player's progress in the Strike Force missions may go on to change even the plans of the story's antagonist, Raul Menendez. By the end of the game, the player may have changed the results of the new Cold War, and the player will be shown what could have gone differently.