Iran says warns off U.S. U2 spy plane, drone

Iran's air defenses have forced an approaching U.S. spy plane and a reconnaissance drone to change course near its air space over the past six months, a military official was quoted as saying on Sunday .Brigadier General Farzad Esmaili, commander of the Iran's air defense force, said an unmanned RQ-4 drone was intercepted last week and a U2 spy plane was warned away in March, the semi-official Fars news agency reported.