i m going to sub-l in paris. and this is cnn the stage is set the day is here and just 15 hours, joe biden and donald trump will be squaring off and what could be the most fateful presidential debate in us history. good morning, everyone. cnn this morning his live in atlanta. it is 6:00 a.m. here on the east coast. i m kasie hunt. it s wonderful to have you with us when president biden and former president trump take this age tonight here at cnn s world headquarters in atlanta, a sitting president and an ex-president will be debating for the first time ever. and it is just shy of four years since they last song each other face-to-face before joe biden beat donald trump. and in a modern first, trump refused to stand on stage and hand power to his successor at the inauguration. so help you god. so help me god. congratulations, mr. president trump, flying away from the white house in his helicopter, leaving washington for the last time as president, i remember watching t