Updated at 6 a.m. ETIn a surprise move, the secretary in charge of negotiating Brexit has announced his resignation, saying a proposal announced last week hands over too much power to the European Union as a condition for Britain's departure from the bloc.Brexit Secretary David Davis acknowledged that his departure was "career-ending," but he told the BBC that he felt the U.K. was "giving away too much and too easily" to EU negotiators. He said the Brexit plan had "a number of weaknesses."Davis said the so-called "soft Brexit" plan, which proposes maintaining a "UK-EU free-trade area," would leave the U.K. in, "at best, a weak negotiating position and, at worst, an inescapable one.""This is painting something as returning sovereignty, returning control, to the House of Commons, when in practice it actually isn't doing so," Davis said.Later, it was announced that Brexit campaigner Dominic Raab had been tapped to replace Davis.Davis' departure comes just nine months before Britain is scheduled to leave the EU and 15 weeks before a final deal is to be signed.The resignation is a blow to Prime Minister Theresa May, whose government is already in a weak position. As the BBC notes: