US: Joe Biden sworn in as 46th President, Kamala Harris becomes first female vice-president; Biden signs flurry of executive orders reversing major Trump policies; Donald Trump pardoned 143 people including former aides and relatives on his last day as US President; China imposes sanctions on 30 members of former Trump administration including Mike Pompeo; Farmers' protest enters 57th day; govt offers to postpone implementation of farm laws for 1.5 years, farm unions to reply on Jan 22 and more...