I’d be shocked if anyone alive is.

A couple of weeks ago the Council of the EU authorized both the Commission and members to sign onto this convention. That’s the best I’ve got and it still doesn’t tell us if this is would apply automatically to Germany and others without them signing on, but I guess in theory it helps the convention get over the 40 signature threshold if it weren’t going to already. Signing on still isn’t done either as it runs from October 25th 2025 through December 31st 2026.

PS: if you saw a previous version of this comment, your eyes weren’t fooling you, I just got taken for a ride by a bad source that confused the Council of Europe with the Council of the EU so I nuked it.

That depends on the topic of the treaty.

The EU member countries have delegated their decision making powers on certain limited number of topics to the EU institutions, like The EU Commission, The EU Council or possibly others. One such topic is the trade. As a result, all EU countries share the same trade policy.

For other topics, where there is no such delegation in place, everything needs to be ratified by every member country individually.

I am unsure into which category this particular treaty falls.