Sweden
Practice Relating to Rule 75. Riot Control Agents
Under Sweden’s Penal Code (1962), as amended in 1998, “use of any weapon prohibited by international law” constitutes a crime against international law.
The Code further states:
A person who:
… uses riot control materials as a means of warfare shall be sentenced, if the act is not regarded as a war crime against international law, for
unlawful handling of chemical weapons to [punishment].

[emphasis in original]