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In page War crimes in Afghanistan:

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White phosphorus has been condemned by human rights organizations as cruel and inhumane because it causes severe burns. White phosphorus burns on the bodies of civilians wounded in clashes near Bagram were confirmed.[citation needed] The US claimed at least 44 instances in which militants used or stored white phosphorus in weapons.[1] In May 2009, the US confirmed that Western military forces in Afghanistan use white phosphorus to illuminate targets or as an incendiary to destroy bunkers and enemy equipment.[2][3] US forces used white phosphorus to screen a retreat in the Battle of Ganjgal when regular smoke munitions were not available.[4]