A world war was declared on 7 October. No news station reported on it, even though we will all have to suffer its effects. That day, the Biden administration launched a technological offensive against China, placing stringent limits and extensive controls on the export not only of integrated circuits, but also their designs, the machines used to ‘write’ them on silicon and the tools these machines produce. Henceforth, if a Chinese factory requires any of these components to produce goods – like Apple’s mobile phones, or GM’s cars – other firms must request a special licence to export them.