Harari: Britain can be an American "vassal" or pay 500 billion pounds for its own artificial intelligence if the country's economy and military operate on an AI infrastructure "that the Americans can close with the push of a button", it is no longer independent, Yuval Noah Harari told Rory Stewart in the rest is politics. He calls it "a real threat." He sees three options for Britain. Accept being an American vassal, and then every time Washington says jump, you jump, even if he asks you to give the Falklands to Argentina. Or build AI in the UK. The price is around £500bn, paid for with cuts to welfare, education and transport. Or split the bill with Germany, France and Spain. This only works if the UK rejoins the EU "today" and integrates much more closely.