London, Jan 5: To screen its assault on the heavily populated Gaza strip, Israel is believed to be using controversial white phosphorus shells, whose use is banned under the Geneva conventions as an offensive weapon against civilians, but its use as a smokescreen is not prohibited by international law.
The weapon, used by British and US forces in Iraq, can cause horrific burns but is not illegal if used as a smokescreen, The Times reported.
As the Israeli army stormed to the edges of Gaza City and the Palestinian death toll topped 500, the shells could be seen spreading tentacles of thick white smoke to cover the troops' advance.