Biden Confuses Kamala Harris for Trump, Zelenskiy for Putin at Vital Moment.

President Joe Biden made two critical mistakes during a NATO summit that raised concerns about his mental acuity and threatened his campaign. He mistakenly introduced Ukrainian President Volodymyr Zelenskiy as Russian President Vladimir Putin and fumbled a question about Vice President Kamala Harris by saying he wouldn't have picked Vice President Trump if he didn't have confidence in her. While Biden's performance had some shaky moments, it was not enough to ease the intraparty turmoil that was set off after his debate against Donald Trump. Some lawmakers are calling on Biden to step aside, but he remains determined to continue his campaign. [Extracted from the article]