As options narrow on Syria, Trump prepares to drop sanctions hammer on Turkey.

Axar.az reports citing Reuters that President Donald Trump’s administration is set to impose economic sanctions on Ankara, potentially as early as this week, for its incursion into northern Syria, one of the few levers the United States still has over NATO-ally Turkey.

On Sunday, Trump said he was listening to Congress, where Republicans and Democrats are pushing aggressively for sanctions action.

“Dealing with @LindseyGrahamSC and many members of Congress, including Democrats, about imposing powerful Sanctions on Turkey,” Trump said on Twitter, referring to the loyal Trump ally and U.S. senator who lambasted the president last week.

Experts doubted that any of the U.S. punishments would make Erdogan change his mind, given his long-held belief that the Kurdish fighters in Syria threaten national security and whom Ankara sees as a branch of the Kurdistan Workers Party (PKK).

“This is a monumental failure on behalf of the United States,” said Aaron Stein, director of the Middle East program at the Foreign Policy Research Institute think tank.