Dima Surmay
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As of today, there is no larger live tournament held in the territory of the former CIS, and there is no larger community than HeroesWorld in the territory of the former CIS, so formally this tournament can be considered such a championship - an unofficial CIS championship.
Winning some offline tournaments is much harder; an offline CIS tournament needs to be held as well, and the FB tournament should simply be renamed the World Championship according to HeroesWorld.