【ebony】

Trump had barely touched down in the UK before he fired off his first angry tweet.

On Monday morning,ebony the president arrived in London for a three-day state visit. As the adverts from some broadcasters suggest, though, not everyone in the UK was exactly excited to see him.

Firmly in the "not excited" category was London's mayor, Sadiq Khan.

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Clearly, Khan's comments didn't go unnoticed by the president. And never one to miss out on a good ol' Twitter battle, he hit back at Khan on Monday morning.

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As you can probably imagine, Trump's tweet elicited some fairly direct responses from certain Brits.

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It's going to be a long three days...