Easy. Hanging around my college last week, I met an Arab-Christian professor who is not only pro-America, but also pro-Israel, and frequently talks to his family back in Iran.
He said that the Arabs are fucking scared of Bush. He took out two of their countries with relative ease and with help of only a few allies. Bush is willing to wipe out their countries if push comes to shove.
Kadaffhi knows this and caved faster than Superman on laundry day.