EU leaders today approved the opening of the next stage of Brexit talks after reaching a deal on divorce terms with Britain. <br/><br/>European Council President Donald Tusk said, this mean talks can move on to the long-term relationship between the UK and EU, including trade and security. <br/><br/>The first issue to be discussed, as early as next week, will be the terms of a transition period after the UK leaves in March 2019. <br/><br/>European Commission President Jean-Claude Juncker has warned this process would be "significantly harder".