Trump: anyone doing business with Iran not to be doing business with U.S.

U.S. President Donald Trump warned that anyone doing business with Iran will not be doing business with the United States, as U.S. sanctions on Tehran were reimposed.

The U.S. president wrote in a tweet today that new measures taken against the Middle Eastern country have "officially been cast".

"The Iran sanctions have officially been cast. These are the most biting sanctions ever imposed, and in November they ratchet up to yet another level. Anyone doing business with Iran will NOT be doing business with the United States. I am asking for WORLD PEACE, nothing less!" Trump wrote on Twitter.