The central problem of sanctions is that they don't stop wars. No nation anywhere on Earth has ever been forced to stop fighting because of sanctions. What sanctions do accomplish, however, is the restructuring of elements of the target economy and we've seen huge evidence for this with regard to Russia. Moreover, sanctions can result in outcomes that are contrary to those desired by those imposing them - witness the problem with putting oligarchs on a no-exit sanctions list: with no way off the list and therefore no way to regain their Western assets, oligarchs have only the option to do everything possible to help Putin because otherwise they lose their Russian sources of wealth. Faced with losing 50% or losing 100%, naturally the oligarchs prefer the former. I'm extremely skeptical of sanctions for empirical reasons, but don't claim they have no effect. It is clear, however, that using sanctions as a response to violence is like "using your words" against someone who's hacking off your limbs with a sword. If we were less delusional and spineless in the West, thousands of Ukrainian lives would have been saved because we've have send military equipment many months ago instead of babbling endlessly about pointless sanctions that have done almost nothing to deter nor prevent persistent Russian violence against Ukraine.