It seems there are some hidden gameplay modes that some folks have found on the PC version of
Call of Duty: Modern Warfare 2. Now we know you can launch a nuke if you get a high enough killstreak in the game but how about a game centered around capturing and launching one? Here's video of Global thermonuclear war and how this might play out if Infinity Ward releases this to the masses. It takes a long time to capture the nuke but I'm guessing more people around it will make it capture faster.