SpaceX cut off Starlink satellite internet service to Ukrainian submarine drones last year just as they were launching an attack on the Russian Black Sea Fleet, according to a new biography of SpaceX founder Elon Musk. The new details of the previously reported incident underscore how dependent multiple governments have become on a man who controls both a dominant means of high-speed communication and a major platform for public discourse, X. The armed submarine drones were poised to attack the Russian fleet, according to a CNN report that cited an excerpt of a forthcoming biography of Musk by Walter Isaacson,...