targeted sanctions. "Here is a list of 20 oligarchs who can't travel to US and EU anymore and can't transfer funds there." There may be a few false positives bu

targeted sanctions. "Here is a list of 20 oligarchs who can't travel to US and EU anymore and can't transfer funds there." There may be a few false positives but that's much better than blanket embargo on a whole population. And when you find a business front of one of these, you have a legal reason to destroy millions from their wealth. Angry oligarchs are probable more scary to Putin than protests in the streets of Moscow.