Trump to deliver speech on Iran nuclear deal

US President Donald Trump will deliver a speech on Friday in which  he is likely to strike a blow at an international Iran nuclear deal.

U.S. officials said Trump was expected to announce that he will not certify the 2015 Iran nuclear deal, believing the agreement is not in the national interests of the United States.

The step would not withdraw the United States from the deal but would give the U.S. Congress 60 days to decide whether to do so by re-imposing sanctions on Tehran.

White House Chief of Staff John Kelly said the U.S. approach toward Iran is to work with allies in the Middle East to contain Tehran's activities.

This week, British Prime Minister Theresa May and French President Emmanuel Macron appealed to the President  to certify the deal for the sake of allied unity.

President has been an outspoken critic of the accord calling it "the worst deal ever."