The BBC carries very graphic footage of the aftermath of an incendiary bomb dropped by a fighter jet on to a school playground in the north of Syria. Scores of children have napalm-like burns over their bodies.
An incendiary weapon is not a chemical weapon as defined by the Chemical Weapons Convention, because it harms humans through heat rather than the direct effects of poisoning. They include weapons such as napalm or white phosphorus.
Incendiary weapons are banned by the Convention on Certain Conventional Weapons (also known as the Inhumane Weapons Convention), Protocol III. Article I defines an incendiary weapon as follows: