The United Nations migration organization said Sunday that at least 13,000 people were massed on Turkey's land border with Greece, after Turkey officially declared its western borders were open to migrants and refugees hoping to head into the European Union.
Turkish President Recep Tayyip Erdogan's decision to open his country's borders with Europe made good on a longstanding threat to let refugees into the continent. His announcement marked a dramatic departure from the current policy and an apparent attempt to pressure Europe.