This is an honest question; I don't have enough samples to draw upon. In the case of Iraq, North Korea, Venezuela, it seems like the misery just trickles down.
Czechoslovakia isn't even a country any more, which says something.
"You only have power over people as long as you don't take everything away from them. But when you've robbed a man of everything, he's no longer in your power—he's free again." -Solzhenitsyn
Czechoslovakia is two countries. They not only gained independence, they did it twice.
Russians have become accustomed to developed Western standards of living. North Koreans and most Iranians haven't.
And in line with Solzhenitsyn... Putin isn't a Grand Ayatollah or a flawless all-benevolent Juche godhead. Iran and North Korea still have something they can take away from their people.
Nobody chooses economic sanctions over armed conflict out of bloodlust.
Have a good day.