The decision on the relevant amendments to legal acts signed by the Finnish President Sauli Niinistö, said on its website the national broadcasting company Yle.

Under the amendments adopted in the interests of "territorial integrity" of the country, subject to military, "which act either directly in the interests of a foreign state, or on behalf of, or with the consent of that state," the article said. We are talking, primarily, about those cases when these persons move in an organized, "equipped or armed", specified in material publications. For violating the ban face criminal penalties.

After the Russian annexation of Crimea people in camouflage uniforms without insignia began to call "little green men". In 2014, Russian President Vladimir Putin acknowledged that in the case of the Peninsula it really was about the Russian military.