[In this Sept. 16, 2016 file photo, hundreds of life jackets line the shore of the New York City waterfront in the Brooklyn borough of New York, placed there by advocates with Oxfam America to draw attention to the refugee crisis. Many of the life jackets used for the action had been collected on beaches in Greece after being used by adult and child refugees. The undertaking was a prelude to the United Nations Summit for Refugees and Migrants. The question of what to do about the world’s 65.3 million displaced people takes center stage at the UN General Assembly Monday, Sept. 19, when leaders from around the globe converge on New York for the first-ever summit on Addressing Large Movements of Refugees and Migrants. (AP Photo/Mark Lennihan, File)]UNITED NATIONS (AP) — With more people forced to flee their homes than at any time since World War II, global leaders on Monday approved a declaration aimed at providing a more coordinated and humane response to the refugee crisis that has strained resources and stoked divisions from Africa to Europe.