The inability of the Soviet Regime to freely trade with the west greatly contributed to it's demise, so sanctions have been proven to contribute to regime change, for a counter example see China or Vietnam, they opened their markets and their Regimes are very much still in power. Additionally the aim of these sanctions is not regime change but hindering the Russian offensive.
> 2. "Economic sanctions" is a euphemism. They are violence that disproportionately affects the most vulnerable. The article correct likens them to strategic bombing;
I don't believe I have to say this, but dropping bombs on cities (strategic bombing) and refusing to buy natural gas (sanctions) is not the same thing.
> 3. They're a form of collective punishment. In many circumstances this constitutes a war crime.
That makes no sense. First of all most of the sanctions are not "punishment", they prohibit certain transactions and are not aimed at people. i.e. The EU decided to stop buying petroleum from Russia, that cannot be possibly construed as punishment. In the cases where the sanctions are actually "punishment" seizing of assets and such, it is very targeted to people and organizations with actual decision making power and influence in Russia or somehow connected with the regime or the Russian State (Oligarchs, banks, etc).
An example of how I view sanctions. Let's say Bob goes to a bank and takes a loan, then Bob proceeds to buy a gun with that loan and rob another bank, sanctions are equivalent to the bank refusing to loan more money to Bob until he stops robbing banks.