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Migrants cross the Maritsa river on their way to the Greek border, near Edirne, Turkey, Tuesday, March. 3, 2020. Migrants and refugees hoping to enter Greece from Turkey appeared to be fanning out across a broader swathe of the roughly 200-kilometer-long land border Tuesday, maintaining pressure on the frontier after Ankara declared its borders with the European Union open. (KEYSTONE/AP Photo/Darko Bandic)