Matt Yglesias proposes an exchange:
There’s an obvious deal to be cut here — NATO membership for the Baltics is a done deal, but we can return Russia’s "near abroad" to Russia in exchange for Russian cooperation on Iran and North Korea, or else we can have a series of standoffs across a wide Eurasian arc. Some would call this appeasement and, frankly, the shoe fits decently. It strikes me, however, as preferable to either going to war with Iran or to having Iran build a nuclear bomb.
I might add that Natasha still thinks I promised to take out the trash every evening.