Atlantic Council Executive Vice President cowrites for CNN's Global Public Square on why expanding NATO would be a deterrent for Russia and stabilize Europe as a whole:
In the face of Russian President Vladimir Putin’s aggression in Europe’s east, NATO has reaffirmed the alliance’s commitment to defend “every inch” of its members’ territory. Right now, it must also make clear that it will respond to any Russian measures to undermine stability in Europe as a whole, especially the security of countries waiting to get into NATO. The cost of not doing so is to invite more Russian aggression.
While NATO membership for Ukraine is not on the table in Brussels or Kiev, Ukraine’s sovereignty may be impacted by what the alliance decides about what to offer Montenegro and Georgia, the two most prepared candidates for membership. NATO foreign ministers have started talks in Brussels on Wednesday that will pave the way for a decision on enlargement at NATO’s September summit in Wales. Unfortunately, some key NATO members are not yet convinced about the benefits of enlargement.
That decision will be based mostly on whether candidates are prepared to meet the responsibilities of membership. But allies also need to consider whether accession of additional countries contributes to NATO’s security. Enlargement is not a favor to aspiring members. Any next round must strengthen the security of the Alliance and the stability of Europe.