Treasury Secretary Steven Mnuchin on Monday said sanctions against Turkey for invading Syria are ready and he just needs President Trump to sign off on them.

“As I’ve said, the sanctions are ready to go,” Mnuchin told reporters. “We’ll be updating the president this morning, and then when he makes the decision, we’ll activate.”

“This is an evolving situation,” Mnuchin added. “We’re monitoring the situation carefully.”

The Trump administration said last Friday that it had authorized sanctions that would shut down Turkey’s economy if President Recep Tayyip Erdogan’s forces target Kurdish fighters or allow Islamic State captives to escape.

On Sunday, around 950 ISIS followers fled a Kurdish-run detention camp after Turkish troops shelled the region and clashed with Kurdish fighters.

Trump earlier Monday heralded the impending penalties.

“Big sanctions on Turkey coming! Do people really think we should go to war with NATO Member Turkey? Never ending wars will end!,” Trump wrote on Twitter.

Turkish forces swept into Syria last week after Trump assured Erdogan in a call that US forces would not intervene in the military operation against the Kurds, who had been allies of the US in the fight against ISIS.

Trump has gotten criticism from Republican and Democratic lawmakers for the decision, saying he has abandoned a key ally and created a humanitarian crisis in Syria.

Turkey views the Kurdish fighters as members of a terror group aligned with insurgents who have been fighting the government in Turkey for decades.