I don't understand how "specialists" keep talking about sanctions "failing"/being bad overall or other comparisons with Germany before WW II and other similar situations that happened 100! years a go.

And basically forget the last 4 countries the US sanctioned: Venezuela, Iran, Cuba, North Korea.

These countries are basically failed states and cease to exist international and have basically zero power over their neighbours, and all US goals were achieved with the sanctions:

South America didn't became communist, South Korea and Japan are still there and way better than North Korea, Iran didn't obliterate Israel, etc, etc... Venezuela doesn't have technology to extract half the oil anymore (check they oil production).

I hope Russia goes the same way.

And I really don't understand why no one talks about the sanctions in Venezuela and Iran, being Iran in population +- half the size or Russia, so not a small country.