The EU and Turkey say they have agreed the broad principles of a plan to ease the migration crisis at a summit in Brussels, but delayed a final decision.<br />European Council President Donald Tusk said all irregular migrants arriving in Greece from Turkey would be returned.<br />For each Syrian returned, Turkey wants the EU to accept a recognised Syrian refugee, and offer more funding and progress on EU integration.<br />Talks on the plan will continue ahead of an EU meeting on 17-18 March.
