September

23 September 2026

Slovak Republic signed the Convention Establishing an International Claims Commission for Ukraine (CETS No. 229).

19 September 2026

Ukraine signed the Council of Europe Convention on the Co-production of Audiovisual Works in the form of Series (CETS No. 230).

18 September 2026

France signed

the Third Additional Protocol to the European Convention on Mutual Assistance in Criminal Matters (CETS No. 227),
the Council of Europe Convention on the Protection of the Environment through Criminal Law (CETS No. 228) and
the Protocol amending the Council of Europe Convention on the Prevention of Terrorism (CETS No. 231)

17 September 2026

Seychelles acceded to the Convention on Cybercrime (ETS No. 185).

15 September 2026

The Netherlands ratified the Convention Establishing an International Claims Commission for Ukraine (CETS No. 229).

11 September 2026

Norway ratified the Convention Establishing an International Claims Commission for Ukraine (CETS No. 229).