A spokesman for Russia's Foreign Ministry said on Dec. 25 that NATO's expansion to the east would force Russiato take "adequate" measures in response, Interfax news agency reported.
Russia's War Against Ukraine
Reuters: Russia says NATO expansion will force Moscow to respond
NATO Secretary General Jens Stoltenberg (2R) and Estonian Prime Minister Taavi Roivas (R) visit the Amari air base that hosts the defence alliance's air policy mission over the Baltic states in Amari, Estonia on Nov. 20, 2014.