US President Donald Trump is not happy that Britain's ambassador to the United States Kim Darroch is highly critical of his administration. 

Leaked diplomatic cables have revealed that Darroch sees the Trump White House as "diplomatically clumsy and inept". The leaked memos, which were published by the UK’s Mail on Sunday, also revealed the senior diplomat doubts that the current administration would become "substantially more normal”.

The memos also described the United States’ current policy on Iran as incoherent and chaotic. Trump frustrated European allies when he withdrew the United States from a deal aimed at preventing Tehran from procuring nuclear weapons. 

Darroch also said he did not believe Trump’s explanation for calling off a military strike against Iran last month. He thinks Trump cancelled the strike because it could have negative implications on the upcoming 2020 presidential elections. 

In response to the highly critical remarks about his administration, Trump fired back at Darroch, saying the ambassador had “not served the U.K. well”.

"We’ve had our little ins and outs with a couple of countries, and I would say that the U.K. -- their ambassador has not served the U.K. well, I can tell you that," Trump told reporters when questioned about Darroch’s leaked remarks.

"We are not big fans of that man, and he has not served the U.K. well. So, I can understand it and I can say things about him, but I won’t bother."

Britain's Foreign Office declined to comment on Darroch’s remarks, but did not deny the authenticity of the leaked documents. The department described the leak as mischievous behavior and added that the public expects diplomats to provide honest assessments of the politics in the countries where they are posted. It said the US ambassador to the UK himself will also send back his assessment of the nation’s politics and personalities. 

“The British public would expect our Ambassadors to provide Ministers with an honest, unvarnished assessment of the politics in their country,” the foreign office said in a statement provided to CBS News.

“Their views are not necessarily the views of Ministers or indeed the government. But we pay them to be candid. "

Despite the incident between Trump and Darroch, the foreign office remains optimistic that the leaks would not cause harm to the relationship between the US and the British government.