About a year ago, this was Putin's set of demands before the invasion of Ukraine: https://www.theguardian.com/world/2021/dec/17/russia-issues-list-demands-tensions-europe-ukraine-nato

> The demands, spelled out by Moscow in full for the first time, were handed over to the US this week. They include a demand that Nato remove any troops or weapons deployed to countries that entered the alliance after 1997, which would include much of eastern Europe, including Poland, the former Soviet countries of Estonia, Lithuania, Latvia, and the Balkan countries.

> Russia has also demanded that Nato rule out further expansion, including the accession of Ukraine into the alliance, and that it does not hold drills without previous agreement from Russia in Ukraine, eastern Europe, in Caucasus countries such as Georgia or in Central Asia.

> Those proposals are likely to be viewed extremely negatively by Nato countries, in particular Poland and the Baltic states. They have warned that Russia is attempting to re-establish a sphere of influence in the region and view the document as proof Moscow is seeking to limit their sovereignty.