DUBAI, United Arab Emirates (AP) — Iran’s Supreme Leader Ayatollah Ali Khamenei said on Thursday his country had delivered a “slap to America’s face” with its strike on a U.S. airbase in Qatar, and warned against any further attacks in his first public comments since a ceasefire was declared with Israel after 12 days of war.

Iran’s Islamic Revolutionary Guard Corps (IRGC) announced it carried out a “devastating and powerful missile attack” on Al Udeid Air Base in Qatar. “This base is the headquarters of the Air Force and the largest strategic asset of the US terrorist army in the West Asia region,” the statement said.

Iran retaliated on Monday for US strikes on Sunday that targeted three of its nuclear sites, firing 14 missiles at American bases in Qatar and Iraq, per the White House. An Israeli defense official confirmed earlier to Al-Monitor that Iran had launched at least 10 missiles toward US bases in Qatar and one toward Iraq.