US presses Russia over Syria truce plan

WASHINGTON (AP) — The Obama administration, frustrated by Syria's ongoing violence, told Russia on Tuesday to "put up or shut up" about implementing a ceasefire in the Arab country, even as the U.S. backpedaled from an agreement for the truce to begin by Friday.
Washington and Moscow announced after at a conference in Germany last week that the ceasefire would start by Feb. 19, raising hopes of a major breakthrough in a war that has raged for nearly five years, killed more than 250,000 people, beset Europe with its worst refugee crisis since World War II and helped the Islamic State emerge.