A war between U.S. and Iran would be a real catastrophe, Russian President Vladimir Putin said.

He added that it would be difficult to calculate the consequences of using force against Iran.

“This will lead to a catastrophe,” he said.

Earlier on Thursday the Islamic Revolution Guard Corps (IRGC) said they had shot down Global Hawk drone that had violated Iranian airspace in the Kuh Mubarak region located at Hormozgan province. The United States claim the drone was in the international airspace.