US President Donald Trump will not attend next week's UN General Assembly's  75th session in person, his chief of staff told journalists aboard Air Force One Thursday, according to a pool report. The decision marks an about-face for Trump, who last month said he wanted to deliver his speech in the General Assembly hall in New York, even if other world leaders are staying away due to the coronavirus pandemic. The main part of this year's UNGA, when world leaders take turns to give speeches, runs through the week starting September 21 and ends on September 29.