Lindsey Graham, a Republican member of the Senate Armed Services Committee, told Reuters on a visit to Baghdad that Turkey should support a continued U.S. presence in Syria.

Turkey has launched two military incursions into northern Syria in the last two years, driving back Kurdish YPG and Islamic State fighters.

Ankara is outraged by U.S. support for the YPG, considering the militia a terrorist organization. It has threatened further operations against the militia across northern Syria, including in the town of Manbij where U.S. troops are stationed alongside YPG fighters.

“I tried to make the case that you want America in Syria because the outcomes of us leaving are not good,” Graham said after meeting Erdogan in Turkey on a regional tour that also included northern Syria and Iraq.

“You don’t want any further incursions in Syria by the Turkish military, you’ll get yourself in a quagmire,” he added.