France
Practice Relating to Rule 72. Poison and Poisoned Weapons
France’s LOAC Summary Note (1992) states that it is prohibited to use poisoned weapons.
France’s LOAC Teaching Note (2000) includes poison in the list of weapons that “are totally prohibited by the law of armed conflict” “owing to their inhuman nature or to their excessive traumatic effect”.
France’s LOAC Manual (2001) incorporates the content of Article 23(a) of the 1907 Hague Regulations.

It also includes poison in the list of weapons that “are totally prohibited by the law of armed conflicts” “owing to their inhuman nature or to their excessive traumatic effect”.
France’s Penal Code (1992), as amended in 2010, states in its section on war crimes related to international armed conflict: “[The following offences] are punishable by life imprisonment: … [u]sing poison and poisoned weapons”.