Trump and Putin's shock call - what no-one's saying

This week, Putin and Russian commentators were delighted, and Ukraine and Western ones were distraught, when Trump announced that he had a long call with Vladimir Putin, and they would be meeting soon to begin negotiating for peace in Ukraine. As he did so, he seemed to be making numerous concessions to Putin, even before the talks had begun. How could this make sense, various media commentators have asked? Well, there might just be something they're missing about the dynamic here. Let's discuss.