Photo: US President Donald Trump speaks about the situation with Iran in the Grand Foyer of the White House in Washington, DC, January 8, 2020. /AFP

WASHINGTON, Jan. 8 (Xinhua) -- U.S. President Donald Trump said on Wednesday that no U.S. casualties were resulted from Iran's missiles attack against U.S. forces in Iraq on Tuesday. 

He said that the United States will impose powerful economic sanctions against Iran.