An Ukrainian woman reacts as she attends a memorial to honour victims of the world's worst civil nuclear accident at the Chernobyl power station, in Kiev April 26, 2009. Ukraine on Sunday marked the 23th anniversary of the world's worst nuclear tragedy when Chernobyl's reactor No. 4 exploded, sending radioactive clouds in the air, poisoning vast areas in Ukraine, Belarus and Russia, and contaminating much of Europe. The writing reeds "To those who dead and alive and unborn." REUTERS/Gleb Garanich (UKRAINE DISASTER SOCIETY ANNIVERSARY)
REUTERS/GLEB GARANICH