Send this page to someone via email

The British government was hunting Monday for the source of a leak of diplomatic cables from Britain’s ambassador in Washington that branded President Donald Trump’s administration “dysfunctional” and “inept.”

British officials are embarrassed by the publication of Kim Darroch’s unflattering assessment — but more alarmed that sensitive confidential information has been leaked, possibly for political ends.

Officials believe the mole will be found among British politicians or officials, rather than overseas.

“I’ve seen nothing to suggest hostile state actors were involved,” said Prime Minister Theresa May’s spokesman, James Slack.

Slack said May had “full faith” in Darroch, a long-serving diplomat, although she didn’t agree with his characterization of the Trump administration.

Story continues below advertisement

He said ambassadors were hired to provide “honest, unvarnished assessments” of politics in the countries where they served, which didn’t necessarily reflect the views of the British government.

In the leaked cables _ published in the Mail on Sunday newspaper — Darroch called the Trump administration’s policy toward Iran “incoherent, chaotic” and said there were doubts about whether the White House “will ever look competent.”

WATCH: Trump reacts to leaked documents from U.K. ambassador: ‘we’re not big fans of that man’

0:20 Trump reacts to leaked documents from U.K. ambassador: ‘we’re not big fans of that man’ Trump reacts to leaked documents from U.K. ambassador: ‘we’re not big fans of that man’

“We don’t really believe this administration is going to become substantially more normal; less dysfunctional; less unpredictable; less faction riven; less diplomatically clumsy and inept,” one missive said.

The cables cover a period from 2017 to recent weeks.

After the cables were published, Trump said the ambassador “has not served the U.K. well, I can tell you that.”

Story continues below advertisement

“We are not big fans of that man,” Trump said.

WATCH: UK ambassador calls Trump administration ‘inept’ in leaked memos

1:16 UK ambassador calls Trump administration ‘inept’ in leaked memos UK ambassador calls Trump administration ‘inept’ in leaked memos

The leak is an embarrassment for outgoing prime minister May, who has sometimes clashed with Trump, and could make things difficult for Darroch, who is accused by some Brexit-backing U.K. politicians of a lack of enthusiasm for Britain’s departure from the European Union.

The journalist who reported the leak, Isabel Oakeshott, is a strong supporter of Brexit.

British Foreign Secretary Jeremy Hunt said Monday that the ability to communicate frankly was “fundamental” to diplomacy.

WATCH: Trump brings controversy, criticism to 1st UK state visit

3:01 Trump brings controversy, criticism to 1st UK state visit Trump brings controversy, criticism to 1st UK state visit

International Trade Secretary Liam Fox, who is meeting U.S. officials in Washington, called the leak “malicious.”

Story continues below advertisement

“I think it is unconscionable that any professional person in either politics of the civil service can behave in this way,” he said.