Migration key to new relationship, Cameron tells EU

By Gabriela Baczynska and Robert-Jan Bartunek BRUSSELS (Reuters) - Outgoing Prime Minister David Cameron told European Union leaders on Tuesday that Britain's future relations with the bloc it voted last week to leave would depend on the EU's willingness to allow it to curb free movement of workers. Cameron, who resigned after losing a referendum on remaining in the EU last week, told what may be his last summit of the 28-nation bloc he hoped the United Kingdom would maintain as close as possibl