White phosphorus munitions used in Islamic State-held Mosul by Iraqi forces pose a grave danger to civilians, as their scattered remains can cause horrific burns all the way to the bones.
While white phosphorous is said to be a useful tool aiding the Iraqi forces during their advance on Islamic State stronghold of Mosul, it may cause more harm than good on the ground.
People trapped in Mosul are likely to start fleeing the city, taking the eastern road covered with half-burned white phosphorous munitions which may ignite again and hurt civilians who come into contact with the chemical.
White phosphorus can leave severe burns, penetrating through the skin, muscles and bones.
The adviser noted that the use of the toxic weapon was seemingly justified, but the manner in which the substance is being used sparks concerns.