In all old Soviet dwelling houses (is it right word for "жилой дом"?) doors were built to be pushed in the flat, in order to be easily broken from outside. Do you know why? It was made to make it easier to police and KGB to break into the flat.

Friendy is absolutely right that it's criminality increase, not climat reasons to add the second steel door which opens outside.

This is the Russian mentality in house-building
Police and criminals. It's pointless to argue about fire safety.