Backing his own reasoning by specific scientific material derived from research works by specialists, both Russian and foreign, the author tries to substantiate his thesis that Quebec’s secession from Canadian federation within the nearest decades is quite probable. With this eventuality in view, he discusses different scenarios of future state evoluton of Canada. He analyzes, too, the causes that have made for this eventuality of disintegration of a prosperous state. The author holds that the ethno-national principle which was assumed as the basis for the formation of a federation, is far from indisputable. As it is based, likewise, on the similar principles that the Russian Federation was being based while being formed, Canadian experience is especially topical for it.