Five Other Foreign Leaders Who Have Slammed Donald Trump

— -- The latest war of words between presumptive U.S. presidential nominee Donald Trump and British Prime Minister David Cameron is not the first time the New York billionaire has been criticized by a foreign leader.

The United States and the U.K.'s long-touted "special relationship" has been strained for much of the presidential campaign, with the British Parliament holding a debate in January over whether Trump should be banned from the country in light of his "suggestion" to ban Muslims temporarily from entering the United States.

Here are some of the foreign leaders who couldn’t hold their tongues:

The Member of Parliament Who Called Him an Idiot

There have been many vocal critics, but Scottish politician Gavin Newlands was sure not to parse his words.

"Let's be clear: Donald Trump is an idiot," Newlands said during the same debate in Parliament.

"I've tried to find different, perhaps more parliamentary adjectives to describe him, but none was clear enough. He is an idiot."

The Other Member of Parliament Who Basically Called Him an Idiot

Another Member of Parliament, Victoria Atkins, spoke on behalf of her constituents, while also giving the bars in her eastern England district a plug.

"His policy to close the border if he is elected as president is bonkers. And if he met one or two of my constituents in one of the many excellent pubs in my constituency, they may well tell him he is a wazzock for dealing with this issue in this way," she said, using a northern English slang term that basically means an idiot.

The Mayor Who Said Trump Is Someone to Avoid

In response to Trump's claims that there are some parts of London that local police avoid, then-London Mayor Boris Johnson fought back.

"The only reason I wouldn't go to some parts of New York is the real risk of meeting Donald Trump," Johnson said in December, according to The Independent. http://www.independent.co.uk/news/uk/politics/boris-johnson-the-only-reason-i-wouldnt-go-to-some-parts-of-new-york-is-the-real-risk-of-meeting-a6765201.html

The Far-Right Politician Who Thinks Trump Has Gone Too Far

Marine Le Pen has earned her share of criticism over the years as the leader of the National Front, a conservative party in France, but even she thought Trump went too far with his initial call to ban Muslims from temporarily entering the United States, which Trump now says was a “suggestion.”

"Seriously, have you ever heard me say something like that?" she said during an interview when asked about Trump's proposed policy.

The Politician Preparing for the Worst

Carl Bildt, a former Swedish foreign minister, made his thoughts on Trump known less than two months into the real estate mogul's presidential campaign by posting a somewhat apocalyptic tweet.

"If Donald Trump was to end up as President of the United States I think we better head for the bunkers," he wrote.

Bonus: The Politician Using Trump as a Selling Point

When asked about his views on Trump, Canadian Prime Minister Justin Trudeau referenced an online campaign where people have been advocating for some disgruntled Americans to relocate to a Canadian island should Trump head to the White House.

"Cape Breton is lovely, all times of the year," Trudeau said.

"I’m not going to pick a fight with Donald Trump right now. But I’m not going to support him either, obviously," he said during an interview with Huffington Post Canada.

"I prefer to trust that my American friends will exercise their democratic rights with a level of the wisdom of crowds that always ends up coming through in a democracy," he said.