http://security.blogs.cnn.com/2012/11/08/first-on-cnn-iranian-jets-fire-on-u-s-drone/?hpt=hp_t3 Two Iranian Su-25 fighter jets fired on an unarmed U.S. Air Force Predator drone in the Persian Gulf last week, CNN has learned. The incident raises fresh concerns within the Obama administration about Iranian military aggression in crucial Gulf oil shipping lanes. The drone was in international airspace east of Kuwait, U.S. officials said, adding it was engaged in routine maritime surveillance. Although the drone was not hit, the Pentagon is concerned. Also: Obama faces world of challenges in second terms Two U.S. officials explained the jets were part of Iran's Revolutionary Guard Corps force, which has been more confrontational than regular Iranian military forces. The Obama administration did not disclose the incident, which occurred just days before the presidential election on November 1, but three senior officials confirmed the details to CNN.