President Joe Biden's recent press conference following a NATO summit has failed to quell concerns within his own party about his candidacy for re-election. Despite addressing key issues and demonstrating his foreign policy knowledge, Biden made notable verbal gaffes, including referring to Vice President Harris as 'Vice President Trump' and calling Ukrainian President Zelensky 'President Putin.' These mistakes, coupled with previous poor performances, have led several Democratic politicians and donors to call for Biden to step aside. Critics argue that his errors undermine his credibility and highlight concerns about his mental fitness to lead. While some aides and supporters defended his performance, the Democratic Party remains divided over his ability to run against Donald Trump in the upcoming election.