One problem with Elon Musk’s offer to buy Twitter Inc for about $40 billion is that he does not have $40 billion. Of course he is very rich — the richest person in the world, worth $260 billion by Bloomberg’s estimate — but most of that money is tied up in the stock of Tesla Inc, SpaceX, the Boring ...

  Two world wars had raged within three decades, costing over 100 million lives, when history’s most destructive weapon was deployed in August 1945. The horrific prospect of nuclear-fuelled, mutually assured destruction has kept superpowers in check since then, and a cyber-equivalent may be just what’s needed as global hostilities turn digital. Russia’s invasion of Ukraine in February has been ...

Bloomberg American Airlines Group Inc surged, leading an industry rally after saying that corporate and international flying are coming back and that it will be profitable this quarter. The upbeat outlook came as American reported that first-quarter revenue rebounded to 84% of pre-pandemic levels as offices reopened and travel restrictions were lifted across the globe. Sales this quarter will exceed ...