President Donald Trump said on Twitter Monday he will “totally destroy and obliterate” Turkey’s economy if the country takes any action that he considers “off limits” after announcing U.S. forces will withdraw from Syria. Trump’s threat followed the White House announcing on Sunday that Turkey will invade Northern Syria in a campaign against the self-declared Islamic State. Republicans have since blasted this decision as a “grave mistake” and “a disaster in the making.”

As I have stated strongly before, and just to reiterate, if Turkey does anything that I, in my great and unmatched wisdom, consider to be off limits, I will totally destroy and obliterate the Economy of Turkey (I’ve done before!). They must, with Europe and others, watch over... — Donald J. Trump (@realDonaldTrump) October 7, 2019

“The U.S. has done far more than anyone could have ever expected, including the capture of 100% of the ISIS Caliphate. It is time now for others in the region, some of great wealth, to protect their own territory,” Trump added. The White House’s decision has been widely criticized as jeopardizing the lives of U.S.-allied Kurdish forces by leaving them in the Kurdish-controlled region to fend for themselves. This comes after they helped the U.S. defeat the Islamic State in Syria. The Kurds are considered to be a terrorist organization by the Turkish government. Withdrawing U.S. troops, therefore, places them at even greater risk, the Kurds’ Syrian Democratic Forces warned in a statement that accused the U.S. of abandoning its responsibilities “in the war on terror.”

Chip Somodevilla via Getty Images President Donald Trump's decision to withdraw U.S. troops from Syria has been slammed as a "disaster in the making" and “a betrayal” to America’s Kurd allies.