Then US president Obama shakes hands with President-elect Trump at the White House on Nov. 10, 2016, in Washington, DC

The former British ambassador to the United States Kim Darroch had said the Trump administration was "set upon an act of diplomatic vandalism" in its decision to abandon the Iran nuclear deal.

Iran Press/Europe: Kim Darroch, the former United Kingdom ambassador to the United States, said the Trump administration was "set upon an act of diplomatic vandalism" in its decision to abandon the Iran nuclear deal.

The Daily Mail report on Saturday comes following news last week that Darroch sent diplomatic cables describing President Donald Trump as "inept," "insecure" and "incompetent." 

After President Donald Trump said Monday that the White House would no longer deal with Darroch, the British ambassador  resigned.

Read more:

Donald Trump says he will no longer deal with UK envoy who labeled him 'inept'

The former ambassador said Trump had seemingly left the Iran nuclear deal for "personality reasons," known as the Joint Comprehensive plan of Action (JCPOA) because the deal had been agreed to by former President Barack Obama.

Darroch hinted at discord brewing between Trump's closest aides and said the White House had failed to produce a "day-after" plan on how to handle the aftermath of withdrawing from the deal.

At the time the US withdrew from the deal, senior Trump administration officials -- including Secretary of State Mike Pompeo and the Director of National Intelligence Dan Coats acknowledged that Iran was adhering to its commitments under the deal.

Earlier this week, Trump tweeted that Iran "has long been secretly enriching," a claim that has been contradicted by the International Atomic Energy Agency, whose monitors were tasked with ensuring that Iran was complying with the terms of the 2015 deal, as well as by independent experts and by Trump's own top intelligence officials.

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