TIVAT, Montenegro — French President Emmanuel Macron and German Chancellor Friedrich Merz will join a group of EU leaders at a summit on Friday, as capitals try to find consensus on how far, and how fast, the process of bringing new members into the bloc should go. They are taking part in talks in the small Balkan nation of Montenegro at the annual EU-Western Balkans summit, as Brussels accelerates efforts to advance membership for countries seeking to join the bloc. No new member has been