TEHRAN, May 30 (RIA Novosti) - A pilotless Iranian reconnaissance plane circled for 25 minutes over a U.S. aircraft carrier in the Persian Gulf before returning safely to its base, a senior Iranian official said Tuesday. "Our pilotless reconnaissance plane flew over the USS Ronald Reagan in the Persian Gulf unnoticed to the Americans for 25 minutes," the official said, according to Iran's Fars agency. He did not say when the flight took place, but added that U.S. radars picked up the unmanned aerial vehicle after 25 minutes, and that four USAF fighters and two helicopters were scrambled to intercept...