For Russians—and maybe Ukrainians—it is not unusual for men to mouth kiss when expressing intense feelings that are not sexual so I'd say the pride poster is full of it, as pride posters usually are. Examples here But who knows? Maybe they really do have something going on. Missing is the famous photo of a Russian soldier kissing an American soldier during what was, I expect, a vodka-fueled banquet celebrating their armies meeting in Berlin very near the end of WWII.