Trump threatens 'unprecedented' economic consequences for any nation aiding Iran

President Donald Trump on Wednesday issued a stern warning to any nation thinking about offering a lifeline to Iran after announcing the launch of a U.S. operation he likened to an "economic D-Day."

"Today, I am announcing the MOST CRUSHING ECONOMIC OPERATION EVER TAKEN AGAINST ANY COUNTRY! This will be Economic Warfare and Isolation on an unprecedented scale," Trump wrote on Truth Social. 

"I am also announcing that ANY country that allows its financial institutions, businesses, airports...