Iraq, which has no combat aircraft, will be vulnerable to an air attack for at least a year after American troops leave at the end of 2011, the spokesman for US forces in the country said on Wednesday. While Iraqi forces will largely be able to deal with any internal security threats after the US withdrawal, Brigadier General Jeffrey Buchanan told AFP the country will be at risk of airborne attack until at least 2013, when it hopes to take delivery of F-16 US fighter jets. "There's a potential; there will be a gap in their capability that they would...