The writer is CEO of the New America think-tank and an FT contributing editor
Anne Hidalgo, mayor of Paris, greeted Joe Biden’s victory in the US presidential election with the tweet: “Welcome back America!” Mr Biden has reciprocated in the same language, telling European leaders who called to congratulate him, “America is back. We’re going to be back in the game. It’s not America alone.”
Yet the world can be excused for wondering how long this internationalist America will remain on the world stage. After two close elections that have left an electorate deeply split between nationalists and internationalists, who can be sure how much any agreement with the US is now worth?