US President Joe Biden landed in Berlin on Thursday evening for a brief visit to celebrate transatlantic solidarity and discuss how Western leaders can help support Ukraine against Russia. His visit will be his last in office. With the US election weeks away, and the race extremely tight, the possibility of former president Donald Trump winning threatens to alter US foreign policy and the relationships Biden is in Berlin trying to maintain. German Chancellor Olaf Scholz has made no secret of his admiration for Biden in improving relations between the countries since Trump was last in power. On…