French President Emmanuel Macron appointed Michel Barnier, the EU’s former Brexit negotiator, as his new prime minister on Thursday, after weeks of drawn-out talks following an inconclusive snap election.Barnier, 73, led the EU’s talks with Britain over its exit from the bloc from 2016-2021. Prior to that, the conservative politician held roles in various French governments and was also EU commissioner.Macron had considered a string of potential prime ministers in recent weeks, none of which mustered enough support to guarantee a stable government, and there is no guarantee Barnier’s…