2 years
It sort of makes sense for most of the countries on there, as they (or the slice of them in the awkward timezone) aren’t big enough to justify splitting their timezones in half. Just pick the one that matches the most people and move on…
But what the bloody hell are countries like Spain, Portugal, and France doing?? Basically their whole country is in the wrong timezone!
An agreement with Russia isn’t worth the paper its written in. The Kremlin lies as easily as it breathes.