US President Donald Trump on Wednesday threatened to cut off financial aid to countries that vote in favor of a draft United Nations resolution against his decision to recognize Jerusalem as Israel's capital.

"They take hundreds of millions of dollars and even billions of dollars, and then they vote against us. Well, we're watching those votes. Let them vote against us. We'll save a lot. We don't care," Trump told reporters at the White House.

The 193-member UN General Assembly will hold a rare emergency special session on Thursday at the request of Arab and Muslim countries on the controversial U.S. decision.