Irish PM warns Theresa May that Britain is outnumbered in Brexit talks

European Union leaders heaped yet more pressure on Theresa May to solve the vexed issue of the Irish border in the Brexit negotiations as they arrived at a Brussels summit.

Leo Varadkar, the Irish prime minister, warned Mrs May that Britain was outnumbered in the tense talks and risked crashing out of the bloc without a deal unless it provided a workable backstop to prevent a hard border.

“Any relationship in the future between the EU and UK isn’t going to be one of absolute equals. We’re 27 member states, the UK is one country, we’re 500 million people, the UK is 60 million, so that basic fact needs to be realised and understood,” Mr Varadkar said.

Jean-Claude Juncker, the president of the European...