Erdogan told reporters late Tuesday that Turkey would “never declare a cease-fire” and that he was unconcerned with U.S. sanctions targeting senior Turkish officials.

“They are pressuring us to stop the operation. They are announcing sanctions. Our goal is clear,” he said of the United States and other Western nations, in remarks carried by the state-owned Anadolu news agency.

He said he refused a U.S. proposal to broker a truce with Syrian Kurdish militants, known as the Syrian Democratic Forces, or SDF, which had partnered with the United States to battle the Islamic State in Syria.

Turkey will not “sit down at the table with terror groups,” Erdogan said, Anadolu reported.