The content originally appeared on: CNN Hundreds of increasingly frustrated migrants stranded at the Belarus-Poland border rushed a checkpoint on Tuesday, throwing rocks, wooden branches and other debris at Polish security forces standing shoulder-to-shoulder with riot shields just meters away. Attempts to breach the barbed wire border fence descended into a dangerous clash, with Polish officers reacting with water cannons and tear gas. Hours after the confrontation broke out, Belarus border guards moved many of the migrants to shelter in […]