President of the European Council Donald Tusk has confirmed all EU leaders have reached an agreement with Turkey's prime minister to curb the migration crisis.
The new arrangements could come into force as soon as Sunday after a revised deal was reached between Turkish PM Ahmet Davutoglu and European Council president Donald Tusk in Brussels.
David Cameron has welcomed an EU deal with Turkey, which he said could "significantly" reduce numbers of migrants crossing the eastern Mediterranean to enter Greece by boat.
The Prime Minister said the arrangement was "a plan to break the link between getting on a boat and getting settlement in Europe.... a plan to bust the business model of the smugglers".
He added: "For the first time in this crisis, I believe we have a plan that, properly and fully implemented, could make a difference."
The agreement involves closing the EU border on March 20 and sending back migrants who arrive in Greece after that date to Turkey.
Cameron asks EU leaders to back deployment of more international patrol ships close to Libyan coast in bid to deter migrant smugglers.
David Cameron will tell his European colleagues that the migration route from Libya to southern Italy is about to begin once more.