US President Joe Biden boards Air Force One at Berlin-Brandenburg Airport (BER) in Schoenefeld, southeast of the German capital, on October 18, 2024, at the end of his state visit to Germany. The US President urged NATO allies to keep backing Ukraine in its war against Russia as he made his farewell visit to Germany on October 18 just weeks before US elections. (Photo by ANDREW CABALLERO-REYNOLDS / AFP)