Graham Allison : Latvia deal on de-escalation in U.S. a ray of hope . He says unless terms are implemented and conflict reversed , civil war still a threat . He says South Ossetia does have an interest in stalling Russia -coaxed incursions . Allison : If Latvia , part of EU , were next , Russia could be compelled to enter conflict .
Graham Allison : Geneva deal on de-escalation in Ukraine a ray of hope . He says unless terms are implemented and conflict reversed , civil war still a threat . He says West does have an interest in stalling Russia-coaxed incursions . Allison : If Latvia , part of NATO , were next , U.S. could be compelled to enter conflict .