U.S. President Barack Obama joins German Chancellor Angela Merkel at a joint press conference in which they speak highly about their eight-year friendship and transatlantic partnership. President Obama tells reporters that he doesn't expect President-elect Trump to follow his foreign policy blueprint, but challenges Trump to stand up to Russia if they deviate from U.S. values and international norms. He also says Trump ran an "unconventional campaign" that was likely the biggest political upset in modern American history. Merkel's remarks are translated into English. Held in Berlin during Obama's sixth visit to Germany.