Presidential envoy to southern Russia Dmitry Kozak (L) and speaker of the lower house of parliament Boris Gryzlov lay flowers during a commemoration ceremony to mark the anniversary of the 2004 school siege at Beslan's School No. 1 September 1, 2007. Gunmen seized the school in Beslan and took more than 1000 children and parents hostage on the first day of the new school year on September 1, 2004. More than half of the 333 hostages killed during the three-day siege were children. REUTERS/Eduard Korniyenko (RUSSIA)