BRUSSELS: The thorny problem of the Irish border could yet scupper a Brexit deal, EU negotiator Michel Barnier warned after talks with his British counterpart Friday, saying "urgent" work was needed to find a solution.
Avoiding a hard border between European Union member Ireland and the British province of Northern Ireland after Britain leaves the EU's single market has become a major obstacle to finding a deal.
After meeting British Brexit minister Dominic Raab in Brussels, Barnier hailed progress on some security…