The Iran sanctions have officially been cast: Trump

US President Donald Trump on Tuesday, August 7, said sanctions reimposed on Iran were the "most biting ever" as he warned other countries from doing business with Tehran.

"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," he wrote in an early morning tweet.

"Anyone doing business with Iran will NOT be doing business with the United States. I am asking for WORLD PEACE, nothing less."