Macedonian police special forces block migrants from entering Macedonia on Greece's border, near the village of Idomeni, Greece, August 22, 2015. Thousands of rain-soaked migrants stormed across Macedonia’s border on Saturday as police lobbed stun grenades and beat them with batons, struggling to enforce a decree to stem their flow through the Balkans to western Europe. Security forces managed to contain hundreds in no-man’s land. But several thousand others – many of them Syrian refugees - tore through muddy fields to Macedonian territory after days spent in the open without access to shelter, food or water. REUTERS/Alexandros Avramidis