IRAN had shot down an unmanned surveillance plane in the south amid reports that the United States is planning military strikes on Iranian nuclear facilities, a press report said today. "This plane had taken off from Iraq and was filming border areas," a report in the hardline Jumhuri Eslami newspaper said. It added the Islamic Republic "officials have obtained information from the plane system and recordings", without giving any further details. US publications reported over the weekend that the White House was studying options for military strikes against Iran's nuclear facilities to pressure Tehran to abandon its controversial nuclear program....