Arguing for a proposed framework for peace between Russia and Ukraine.

If the issue at stake were limited to Ukraine's immediate future, it would be a fairly good deal. But if Putin gains territory and suffers no losses except arms and soldiers, he may well conclude that he should try this again later, in Ukraine or elsewhere. The deal must impose some permanent loss on him, to discourage this.

If the deal will include "autonomy" for parts of Luhansk and Donetsk, that "autonomy" should depend on a plebiscite of the legitimate residents from before 2014, wherever they live now. And it should be done county by county, not presuming the border in advance.