Donald Trump has ordered an airstrike that killed Revolutionary Guard General Qassem Soleimani, the powerful head of Iran’s elite Quds Force, at Baghdad International Airport, the Pentagon confirmed.

The strike also killed Abu Mahdi al-Muhandis, the deputy commander of Iran-backed militias in Iraq known as the Popular Mobilization Forces, which were responsible for the recent attack on the U.S. embassy in Baghdad, officials said.

Soon after news of the strike spread, Trump, who is currently at Mar-a-Lago, tweeted an image of an American flag, offering no further remarks or explanation.

Iran called the strike an act of “international terrorism” and the country’s supreme leader Ayatollah Ali Khamenei vowed that "harsh revenge is waiting for the criminals’ who killed Soleimani.