Iran's Zarif Says He is 'Sick & Tired' of Trump Tweets Telling World What to Do

Earlier in the day, Trump warned other countries against doing business with Tehran, saying he had imposed "the most biting" sanctions on the country. 

"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," Trump wrote in an early morning tweet Tuesday.

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

His warning was apparently addressed to the EU which put into force a law banning companies from complying with US sanctions or court rulings and enabling them to claim compensation for potential damage.

Despite warnings from the EU and other international players, the United States pulled out of the deal in May and reintroduced the sanctions that had been lifted under the accord. Washington also said third countries that maintain business with Iran would be penalized with “secondary sanctions.”

Iran, meanwhile, has remained in the deal, stressing, however, that its commitment would only continue if the remaining parties could ensure continued trade with Iran and Iranian access to the international market.

The EU has already activated a “blocking statute” to protect European businesses from the secondary sanctions.

Also on Tuesday, EU foreign policy chief Federica Mogherini stressed that the international community has an obligation to maintain economic relations with Iran, despite the United States’ unilateral withdrawal from a multilateral deal with the Islamic Republic that could hamper such relations.