France and Germany are each ready to send up to 200 police officers to work with the Frontex border-control agency and up to 100 experts to work with the European asylum agency EASO, interior ministers Bernard Cazeneuve and Thomas de Maizière said in a statement on Saturday.
They called on other EU countries to follow their example because "it is only by working together that we will succeed in managing this unprecedented crisis situation in Greece".
On Friday the EU reached agreement with Ankara that all migrants arriving on the Greek islands would be returned to Turkey, while Europe would take in thousands of Syrians.
The Greek government on Saturday sent an "application plan" to the European Commission, calling for cooperation from member states in putting the plan into operation.
The commission estimates that personnel dealing with the crisis must be increased by 4,000, including 1,000 "military and security personnel" and 1,500 police officers from Greece and other EU countries.
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