On Thursday and Friday next week a meeting of the EU Council will be held in Brussels. David Cameron was warned that a central demand to curb immigration might be asking too much. Donald Tusk, president of the council, will chair the first detailed talks on the issue between Cameron and his 27 peers. He sent EU leaders a progress report after Cameron laid out the reforms he wants if he is to campaign for continued EU membership in a referendum due to take place in 2017. Mr Tusk said, ‘We have made good progress, but have to overcome substantial political differences on the issue of social benefits and free movement.’ Many governments are willing to make changes to keep Britain in the Union; however the main stumbling block is Cameron's pledge to cut immigration to Britain by denying benefits to workers from other EU states for four years after they arrive. The draft agenda for the meeting on 17-18 December 2015 can be seen on: http://www.consilium.europa.eu/en/meetings/european-council/2015/12/17-18/