We have 2 big thick doors to our Moscow flat with 6 locks, all our neighbors have the same. Keeps out the cold, robbers, and drunk kids looking for mischeif.

What I really hate about Russia now is the stray dogs outside and no rules for dog owners inside. People leave their poor pets locked in the flat for the weekend while they go to the dacha. Barking and howling 24 hours/day all weekend. On weekdays the lifts reek of dog pee because the owners don't walk their pets often enough and the dogs can't make it to the street in time. Then the large number of stray dogs plus the large number of pets using the paths and parkways for toilet make our neighborhoods very unpleasant.