New U.S. Secretary of State Mike Pompeo said on Friday (April 27) that President Donald Trump has not yet taken a decision on whether to pull out of the Iran nuclear deal, but was not likely to keep to it without substantial changes.

Pompeo told reporters at a press conference at NATO headquarters in Brussels:  "The President has been clear -- absent a substantial fix, absent overcoming the shortcomings, the flaws of the deal -- he is unlikely to stay in that deal past this May."

Meanwhile, US President Donald Trump speaking at a joint press conference with German Chancellor Angela Merkel in Washington on Friday said the US will ensure Iran will not get close to nuclear weapons -- a goal Tehran has always denied pursuing. 

France’s president, Emmanuel Macron, ended a three-day state visit to Washington this week also predicted that for “domestic reasons” Donald Trump will pull out of the Iran nuclear deal brokered by world powers in 2015, as soon as next month. 

Trump has been a vociferous critic of the agreement known as the Joint Comprehensive Plan of Action (JCPOA), calling it the “worst deal ever” , and often threatening to tear it up.

Back in January, he said he was extending the sanctions relief on Iran for the last time, giving the European signatories a May 12 deadline to fix what he claimed “flaws” in the agreement or he would refuse to waive those bans.

Iran insists there is no way it will renegotiate the nuclear deal, which was endorsed by UN Security Council Resolution 2231 in 2015.