What Estonia PM Kaja Kallas said is that for the Soviet/Russia method, if you want something that you do not have, just take it by force and negotiate from there. In a manner of speaking, you will be negotiating from a position of strength -- that you are in possession of that thing and it will require force to take it from you. Then as you drag out the negotiation, delays or teases of concessions, eventually someone from the other side will get tire and advises their leaders to give A, B, and/or C. You may get %100 of that thing, or you may get partial, but at least you get something from nothing.
The problem of Ukraine is that Russia failed to secure what Russia wanted, even partial of Ukraine so Russia have nothing to even tease of concessions to induce that tiredness of negotiation. If only the Ukrainians put a difficult fight, then Russia would have that position of strength, but the Ukrainians, with NATO assist, put up more than just difficult and for now, actually winning. So why should anyone from the West be tired of negotiations? Why should we put up any inducements? Elon Musk is being called out a 'simp' for his social media comments. Same for some Fox News talking heads when they tacitly advised giving Russia something because they are scared of Poutine.
You can bet whatever salary you make that right now, Poutine is aware that some of his people are plotting his removal from office. No one want a nuclear war. Ukraine is not worth it. Not even Crimea is worth it. Maybe,
IF the Ukrainians feels truly indifferent about Crimea, then maybe we can negotiate with Russia over Crimea. However, with what Poutine put Russia thru and all he gained was little Crimea, his days are numbered. Either he dies a horrible death in Russia or he flee.
But...In case if we need to take out Russia thru a nuclear exchange, we need only two strikes.
Back in WW II, we did not destroyed Hiroshima and Nagasaki like popular impressions have it. But both cities suffered enough damages to induce surrender. So out of all Russia territory, we are looking at two critical targets to essentially cripple Russia. All of Russian government knows this.