Read at Washington Post
Three U.S. service members were killed and over 30 were injured in a drone attack in Jordan, the first deadly military action against American personnel since the Gaza conflict.
"We had a tough day last night in the Middle East," he said. "And we shall respond."
Iranian officials denied involvement in the attack, while the U.S. and Britain have accused Iran of supporting militant groups in the region.
A representative for Iran's permanent mission to the United Nations told the country's official Islamic Republic News Agency that Tehran had no connection to the strike.