article_snippet: Tensions between Russia and Europe worsened last year, leading eight northern European nations to promise to boost cooperation to counter an increase in Moscow's military activity.
article_snippet: Nato made new allegations last week that Russia was arming separatists in east Ukraine, where more than 6,000 people have been killed in nearly a year of fighting.
article_snippet: Russia was arming separatists in east Ukraine, where more than 6,000 people have been killed in nearly a year of fighting.
article_snippet: Moscow denies the claims.
article_snippet: Nato says Nato counted more than 100 intercepts of Russian planes into members' airspace last year, three times more than in 2013.
article_snippet: more than 100 intercepts of Russian planes have forced civilian planes to change more than 100 intercepts of Russian planes courses and Britain scrambled Typhoon interceptor planes after two long-range bombers flew over the English Channel.