Id guess these are Africans graduating from a Russian military institution, but I don’t know where this was and who these guys

I’d guess these are Africans graduating from a Russian military institution, but I don’t know where this was and who these guys are. One thing is for sure: they’ve absorbed the Russian spirit in the course of their studies. They are singing “Officers”, a well-known and loved song dedicated to Russian officers by Oleg Gazmanov. Источник: Putinger’s Cat / Кот Путингера