Afghan school girls receive treatment in a hospital after falling ill in a suspected poisonous gas attack at a school in Kunduz province May 11, 2010. Dozens of schoolgirls in Afghanistan were admitted to hospital on Tuesday after two suspected poisonous gas attacks on schools, officials said, the latest in a spate of similar incidents. REUTERS/ Wahdat (AFGHANISTAN - Tags: CRIME LAW HEALTH)

Afghan school girls receive treatment in a hospital after falling ill in a suspected poisonous gas attack at a school in Kabul May 11, 2010. Dozens of schoolgirls in Afghanistan were admitted to hospital on Tuesday after two suspected poisonous gas attacks on schools, officials said, the latest in a spate of similar incidents. REUTERS/ Mohammad Ishaq (AFGHANISTAN - Tags: CRIME LAW HEALTH)