NATO nation Estonia has doubled down on longstanding pledges to defend its territory if Russian troops set foot on alliance soil. "When the 'green men' cross our border, we shoot at them," Jonatan Vseviov, a top official in Tallinn's foreign ministry, told Germany's Welt newspaper. "It's simple." Newsweek has reached out to the Russian Foreign Ministry for comment via email. The term "green men" was coined shortly after Russian troops, dressed in green uniforms, were spotted in Crimea in 2014