Spoiler alert, in case your wondering what happens in the movie, Iraq has 23 nuclear missles trained on the US and launches. The US responds with nuclear weapons. The Iraqi missles are disabled by the US since in reality they were part of a clandestine operation by the US to keep the enemy from developing their own nuclear weapons which could not be disabled by the US. So the US Nukes Iraq after Iraq goes to the table and launches these US sourced weapons. And since the Nuclear option is used the idea of Deterrence is strengthened.