Greece tries to halt thousands of migrants, sparking UN rebuke

Greece struggled on Monday to stop a growing throng of migrants from crossing its border with Turkey, as the UN urged Greece to honour its commitments under international law.Thousands of migrants are massing on the 200-kilometre (125-mile) border -- seeking to cross into the European Union -- with tired and hungry individuals crying out for help as Greek riot police and soldiers tried to seal off a frontier post.Turkey hosts around 3.6 million Syrian refugees and many Afghans, and President Rec