In another piece of historical revision from Donald Trump’s campaign, his spokeswoman has claimed that President Barack Obama was responsible for the invasion of Afghanistan.

Spokeswoman Katrina Pierson said on Saturday that Afghanistan was “Obama’s war”. In truth, the US and UK led the invasion of the country in October 2001 at the direction of President George W Bush and Prime Minister Tony Blair.

Ms Pierson, who is Mr Trump’s national spokeswoman, was talking on CNN about Mr Trump’s shifting views on whether or not Mr Obama was the “founder” of Isis - a claim he made earlier this week.

“If you want to go way back, we can look at the troop surge. And after 2007, Al-Qaeda was essentially in ashes,” she said.

“It was Barack Obama and Hillary Clinton who then destroyed the entire rollout by wanting to pull out early, announcing their plan, ignoring intelligence.”

She said: “Remember, we weren’t even in Afghanistan by this time. Barack Obama went into Afghanistan creating another problem. It was Hillary Clinton in Libya which was also a reckless decision to create that vacuum. They armed the rebels and they’re even funding them now.”

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Her interviewer sough to clarify the comment. “So you’re saying Barack Obama took the country into Afghanistan post-2009. Is that what you're saying?” Ms Pierson was asked.

She replied: “What I'm saying is - the policies of Barack Obama and Hillary Clinton…That was Obama’s war, yes.”

The comments come days after Mr Trump claimed that Mr Obama was the founder of Isis.

“In many respects, you know, they honour President Obama,” Mr Trump told a crowd in Florida on Wednesday night. “He’s the founder of Isis. He’s the founder of Isis. He’s the founder. He founded Isis.”