HACIPASA, Turkey (Reuters) - NATO said on Tuesday it had drawn up plans to defend Turkey if necessary against any further spillover of violence from Syria's border areas where rebels and government forces are fighting for control. Rebel suicide bombers struck at President Bashar al-Assad's heartland, attacking an Air Force Intelligence compound on the edge of Damascus, insurgents said. Activists living nearby said the bombing caused at least 100 casualties among security personnel, based on the ambulances that rushed to the scene. "Assad... ...