This page summarizes the signature, consent or denunciation of treaties having occurred during the current month.

Information on previous legal acts are available through the form Recent Changes for Treaties.

For any information on a treaty, please click on its number in the European Treaty Series (ETS) or the Council of Europe Treaty Series (CETS).

Recent Changes for Treaties – September

Previous month.

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).