London — Three pro-EU MPs from Britain’s governing Conservatives quit over the “disastrous handling of Brexit” on Wednesday, in a blow to Prime Minister Theresa May’s attempts to unite her party around plans to leave the EU. The MPs, long critical of May’s Brexit strategy to leave the EU which they believe is being driven by Conservative Eurosceptics, said in a statement they would join a new group in parliament set up by seven former opposition Labour politicians. The resignations put May in an even weaker position in parliament, where her Brexit deal was crushed by MPs last month when Eurosceptics and EU supporters voted against an agreement that both sides say offers the worst of all worlds. They could also undermine May’s negotiating position in Brussels in talks with European Commission president Jean-Claude Juncker to try to secure an opening for further technical work on revising the agreement. With only 37 days until Britain leaves the EU, its biggest foreign and trade polic...

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