In this file photo taken on Feb 10, 2022 Elon Musk speaks during a press conference at SpaceX's Starbase facility near Boca Chica Village in South Texas.- Musk has put the current value of Twitter at $20 billion, less than half the $44 billion he paid for the social media platform just five months ago, according to an internal email seen by American news media. World's richest person Musk today overtook former US president Barrack Obama as the most followed Twitter account. - Pic: AFP