It's fascinating to watch #neoconGe people meltdown about preferring diplomacy over war, to the point that they consider any discussion thereof to be cultish. #neocon's - #neoconning
Apparently some #neoconGe'rs on this board are not aware that the United States already pulled off one coup in the Ukraine. Run by current Under Secretary of Political Affairs Victoria "eff the EU" Nuland.
In terms of "concessions" it appears that the NeoCons (as expected) way overstated the capability of the Russian military, it would seem that a non NATO security corridor on the Eastern edge of the former Soviet states could be a good starting point. A disarmed Ukraine (and similar) is a non-starter, but non membership into NATO is an excellent starting point.
The alleged pros and adults

appear to only be interested in war (while they use Russia to broker yet another shitty nuclear deal with Iran).