US President Donald Trump lashed out at a wrong account late Wednesday (29 November) when he attacked the British Prime Minister Theresa May on Twitter and the internet ruthlessly mocked him for it. Trump drew fierce backlash on both sides of the Atlantic after retweeting three unverified videos posted by Jayda Fransen, a leader of the far-right organisation, Britain First.

The White House, however, defended Trump's retweets saying the "threat is real" whether or not the videos are.

"I'm not talking about the nature of the video," White House press secretary Sarah Huckabee Sanders told reporters. "I think you're focusing on the wrong thing. The threat is real and that is what the president is talking about.

"His goal is to promote strong border security and strong national security," she continued. "There is nothing fake about that."

However, the British government, civil rights leaders and lawmakers immediately condemned the tweets with many accusing Trump of fueling anti-Muslim sentiment.

"Britain First seeks to divide communities through their use of hateful narratives which peddle lies and stoke tensions," British Prime Minister Theresa May's office said in a statement. "British people overwhelmingly reject the prejudiced rhetoric of the far right, which is the antithesis of the values that this country represents — decency, tolerance and respect. It is wrong for the president to have done this."

Trump responded by lashing out at May on Twitter saying: "Theresa @theresamay, don't focus on me, focus on the destructive Radical Islamic Terrorism that is taking place within the United Kingdom. We are doing just fine!"

However, the president accidentally linked to @theresamay, an account that appears to belong to a woman named Theresa Scrivener and had 6 followers.

The British prime minister's official account is actually @theresa_may. Trump later deleted the erroneous tweet and tweeted out the same message to the right account.

Twitter, on the other hand, was quick to notice the error and immediately slammed the president for not only criticising an ally but committing an embarrassing mistake in the process.

"As if he hasn't embarrassed us enough already," one Twitter user wrote.

"What does this guy have to do to prove he is unfit? Really? What is going on in the US?" one person asked.

One user chimed: "Trump is unraveling at a terrifying pace."

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Trump lashed out at the wrong Theresa May on Twitter and he was viciously mocked for it. Thomas Lohnes/Getty Images