Israel carried out airstrikes on a defunct military air base in northwestern Syria on Tuesday, prompting the United States to condemn the attack as a threat to regional stability in the latest outburst of American frustration with Israel.

Syrian and American officials said Israel carried out the attack, while the Israeli military declined to comment. Eight airstrikes hit the Abu al-Duhur military air base in Idlib, a city in the northwest about 40 miles from the border with Turkey, according to Syrian state media, and did not cause any casualties.

The Trump administration has been a vocal proponent of Syria’s new government led by President Ahmed al-Sharaa, and the U.S. special envoy to Syria and Iraq, Tom Barrack, said in a statement on social media that Israel’s actions “constitute an unnecessary escalation.”