The Iran nuclear deal must be changed if the US is to remain in it, the top US diplomat says, suggesting its key limits on the Iranian nuclear program must be extended.
Making his debut appearance at the annual United Nations General Assembly, US President Donald Trump accused Iran of exporting "violence, bloodshed and chaos" and of seeking to project its influence in Yemen, Syria and elsewhere in a region rife with sectarian conflicts between Sunni and Shi'ite Muslims.
"We cannot let a murderous regime continue these destabilising activities while building dangerous missiles, and we cannot abide by an agreement if it provides cover for the eventual construction of a nuclear program," Trump said.
He saved his harshest words for the 2015 pact struck by Iran and six major world powers under which Tehran agreed to restrict its nuclear program in return for loosening economic sanctions.
"The Iran deal was one of the worst and most one-sided transactions the United States has ever entered into. Frankly, that deal is an embarrassment to the United States, and I don't think you've heard the last of it - believe me," Trump said.
His chief diplomat, Secretary of State Rex Tillerson, went further, telling Fox News that the agreement must be changed or the US could not stick with it.
Tillerson said the "sunset" clauses, under which some of the deal's restrictions on Iran's nuclear program expire from 2025, were of particular concern.
"If we're going to stick with the Iran deal there has to be changes made to it. The sunset provisions simply is not a sensible way forward," he said.
"It's just simply ... kicking the can down the road again for someone in the future to have to deal with," he added.
In contrast, French President Emmanuel Macron praised the agreement during his speech and said it was inconceivable to abandon it.
"Renouncing it would be a grave error, not respecting it would be irresponsible, because it is a good accord that is essential to peace at a time where the risk of an infernal conflagration cannot be excluded," Macron said.
The French president said he understood US concerns but thought the way to address them was to open up a negotiation designed to extend limits on its nuclear program beyond 2025.
