NEW : Cameron has called for EU reform but was recently thwarted in his efforts to block the appointment of Jean-Claude Juncker as the next president of the European Commission , taking office later this year . Hague 's successor will be Philip Hammond , until now the UK defense secretary . William Hague had served as UK foreign secretary for the past four years . Prime Minister David Cameron announced a major government reshuffle on Monday . Hague will be leader of the House of Commons until next year 's general election .
NEW : Hague 's successor will be Philip Hammond , until now the UK defense secretary . William Hague had served as UK foreign secretary for the past four years . Prime Minister David Cameron announced a major government reshuffle on Monday . Hague will be leader of the House of Commons until next year 's general election .