As a series of devastating terrorist attacks are waged on American soil and the citizens of a nation in shock looks to their Government for reassurance, word publicly gets out that one of the embedded terrorists is negotiating a defection directly with the President’s wife in return for the violence to stop.

Whose the protagonist and whose the antagonist in this film? It seems that your logline is centered on time and place more than people, try centering it on the people involved and their conflicts with each other. Let the war drift to the background as it is the setting. Is there anything ironic to the conflict, like is the terrorist an American who was once friends with the president (if he is the protagonist)?

When the USA is held to ransom by a series of terrorist attacks, the Presidents Wife must negotiate for the terrorist leader's escape, if peace is to be restored.

(I'm guessing the First Lady is the main character?)

Thanks for both your comments. This script is only outlined at this stage. Your advice helps to take a clearer run at this.
-Joey