Iran shoots down U.S. Navy drone over a key oil route

An Iranian surface-to-air missile shot down a U.S. military surveillance drone Thursday in international airspace over the Strait of Hormuz in an "unprovoked attack," U.S. officials said, disputing Iranian reports that the aircraft was over its territory. The incident comes amid rising tensions between the U.S. and Iran. President Trump said that Iran "made a very bad mistake."