No one claimed that sanctions alone will stop the war.
And ALL of the russians are under sanctions since 2014 btw. and that clearly did not prevented the big war, or made Putin less powerful. So if anything, this refutes that sanctions against a whole population are helping.
No, it doesn't, because you don't know what the world would have looked like if there were no sanctions. If the impact of the sanctions delayed the war or forced Russia to go in with fewer supplies then the sanctions absolutely had a measurable impact. Just because Putin has strong authority now doesn't mean he wouldn't have been stronger without sanctions. Your arguments have no basis in reality.
"If the impact of the sanctions delayed the war or forced Russia to go in with fewer supplies then the sanctions absolutely had a measurable impact."
If is key here. You claim there is no alternative to broad sanctions, yet they have been shown to not work (preventing war). And that they delayed the war, you show no proof or indications. If Putins plan was all out war from the beginning, then why would he have waited at all? And sanctions targeting special military supplies are a different thing from sanctioning the civilian population.
So what exactly is your argument based in reality?
And ALL of the russians are under sanctions since 2014 btw. and that clearly did not prevented the big war, or made Putin less powerful. So if anything, this refutes that sanctions against a whole population are helping.