LONDON (AP) — British Prime Minister Keir Starmer has signaled that U.S. President Donald Trump should apologize for his false assertion that troops from non-U.S. NATO countries avoided the front line during the Afghanistan war, describing Trump's remarks as “insulting” and “appalling.”

Trump said that he wasn't sure NATO would be there to support the United States if and when requested, provoking outrage and distress across the United Kingdom on Friday, regardless of individuals' political persuasion.

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