its called white phosphorus, an incendiary device banned from use (does a lot of good). it explodes above the ground throwing hundreds of flaming balls at civilians and buildings. some argue its just a smoke screen/diversion while others argue its a chemical weapon. http://en.wikipedia.org/wiki/White_phosphorus_(weapon)
[ame="http://www.youtube.com/watch?v=UVY4NUKowzg"]YouTube - WP White Phosphorus over Gaza ?[/ame]
[ame="http://www.youtube.com/watch?v=ylbuYnd54As"]YouTube - White Phosphorus[/ame]