title: After Ukraine NATO has a role again, but Americans look to Europe and say: who’s paying?
abstract: The Russian response to what Moscow perceives as its three main security challenges – Western enlargement, China and terrorism/separatism in the Caucasus – has been expansionism. First in Abkhazia in 2008 and then in Crimea this year. With regard to the latter, Putin has set in motion events within Ukraine that, as yet, may still have a very unpredictable outcome.