Rishi Sunak and Joe Biden have announced a landmark deal for transatlantic cooperation that moves the UK firmly into the US administration’s economic orbit and marks a revival in ties after the turbulence of Brexit. While the so-called “Atlantic declaration” unveiled by the two leaders at the end of Sunak’s visit to the US capital is little more than a series of economic mini-deals, its symbolism is significant, signalling a major shift away from the recent UK mantra of unfettered free trade in favour of mutual protectionism. The deal, which will give British green energy and defence companies access to…