The United States and the UK successfully blocked attempts to outlaw all use of incendiary weapons, and all use of incendiary weapons against personnel, and all use of incendiary weapons against forests and plant cover.

This is an area where it’s perfectly reasonable to disagree with how the US watered down this convention, to push for stricter rules on this, and to condemn the use of thermite as an anti-personnel weapon and the use of incendiary weapons on plants that are being used for cover and concealment of military objectives.

So pointing out that this might technically be legal isn’t enough for me to personally be OK with this. I think it’s morally reprehensible, and I’d prefer for Ukraine to keep the moral high ground in this war.