Researchers in Israel saw bursts of white powder over Gaza , group says . White phosphorus can burn people , set structures on fire . Protocol allows use when ` ` not specifically designed to cause burn damage to persons '' Note : Use in densely populated Gaza would violate international humanitarian law .
Researchers in Israel saw bursts of white phosphorus over Gaza , group says . White phosphorus can burn people , set structures on fire . Protocol allows use when `` not specifically designed to cause burn injury to persons '' Group : Use in densely populated Gaza would violate international humanitarian law .