But the global unrest , while causing political strife for Obama in the United States , could provide a new purpose for the 65-year-old NATO alliance , which is suffering an `` identity crisis , '' according to one analyst . `` We will defend our NATO allies , '' President Obama says . Peaceful Europe `` threatened by Russia 's aggression against Ukraine , '' Barack Obama says . Militant Iraqi ' gains in Syria and Syria also cause for concern for NATO members . Summit originally scheduled to address Ukraine 's future when troops leave .
`` We will defend our NATO allies , '' President Obama says . Peaceful Europe `` threatened by Russia 's aggression against Ukraine , '' Barack Obama says . Militant Iraqi ' gains in Syria and Syria also cause for concern for NATO members . Summit originally scheduled to address Ukraine 's future when troops leave .