Russia has a special problem due to the large number of deaths in men between 30 and 50. This is due to drinking, violence, and disease.
You won't see this in the other countries with population problems.
Simple, ban vodka in Russia.
Yep and many of the ones that remain are abusive and believe it is their God-given right to keep mistresses. Hence the number of "Beautiful Russian Brides" websites proliferating on the internet.