Why Russians do not smile (2002)
Estonian here. At Skype (10+ years ago) I observed, that members of large cultures (American, British, Hindu etc.) had real trouble adjusting to the predominantly Estonian-based engineering culture. Probably because they had never had to adjust, commonly people adjust to _their_ culture as it tends to dominate large organizations. But once they did make an honest attempt, that was always most welcomed and gained them a large amount of goodwill. Our US CEO going to a sauna with 20 naked engineers...I’ve also seen the “how are you” thing described in comments unfold.A Hindu pm had the habit of sitting next to developers while they worked, sometimes putting a hand on their knee. After being politely explained  that the size of an Estonian personal space is measured in astronomical units and that this was the reason devs literally scattered upon his approach, he immediately changed his behavior and became great friends with the team.A US lady came to hr complaining about an Ukrainian dev approaching them inappropriately during a party. The hr-person, having witnessed the situation, explained that this was just their way of showing friendly interest and no disrespect was intended. A while later, a Japanese guy came to the hr person complaining the original lady from us had hugged them. Again, it was explained that this is just what Americans do.Cultures are hard and take a lot of mutual respect to work through.