President Trump Donald John TrumpBiden on Trump's refusal to commit to peaceful transfer of power: 'What country are we in?' Romney: 'Unthinkable and unacceptable' to not commit to peaceful transition of power Two Louisville police officers shot amid Breonna Taylor grand jury protests MORE ripped into London Mayor Sadiq Khan in a new interview for his handling of terrorism in the city, saying Khan was doing a “terrible job.”

Trump said during an interview with The Sun published Thursday while the president was in the United Kingdom that Khan has “done a very bad job on terrorism” by allowing many migrants to live in the London.

“I think allowing millions and millions of people to come into Europe is very, very sad,” the president said. “I look at cities in Europe, and I can be specific if you’d like. You have a mayor who has done a terrible job in London. He has done a terrible job.”

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“Take a look at the terrorism that is taking place. Look at what is going on in London. I think he has done a very bad job on terrorism,” Trump continued.

“I think he has done a bad job on crime, if you look, all of the horrible things going on there, with all of the crime that is being brought in.”

The two leaders have been highly critical of each other, with Trump going after Khan last year in the aftermath of a terror attack in London.

Khan said last year that Trump's trip to the United Kingdom should be cancelled after the president retweeted videos from a leader of an ultranationalist British party that claims to show Muslims engaging in violent acts.

The mayor has also suggested that Trump would be met with protests if he chose to visit London.

Trump, who is currently in the United Kingdom after attending the annual NATO summit in Brussels this week, also told The Sun that Khan’s criticism of him has shown a lack of respect toward the U.S.

“I think he has not been hospitable to a government that is very important. Now he might not like the current President, but I represent the United States,” Trump said.

“I also represent a lot of people in Europe because a lot of people from Europe are in the United States,” he added.