BELFAST—Ireland has emerged as an unexpectedly tough hurdle to advancing stalled Brexit talks next month, prompting Dublin to warn that Britain isn’t doing enough to prevent the return of customs checks on the island and could potentially reignite sectarian violence. Republic of Ireland officials fear that Britain’s decision to leave the European Union, slated for March 2019, will cleave Irish business links and social ties that have deepened since the end of violence almost two decades ago.

Source: Wall Street Journal November 22, 2017 21:32 UTC