The classic mistake here is to consider that dictatorships are like democracies—they aren't, and their power structure is different and more resilient to economic shocks. Even Bachar Al-Assad, who was much weaker, took 13 years to leave power.
At some point, one should question if wide sanctions targeted at increasing the suffering of the civilian population are really worth it.
Not having sanctions potentially strengthens a regime more than sanctions do, embeds them in the global geopolitical/cultural/economic stage, normalises their behaviour, and goes against a lot of people's deontology.
Look at Israel: no sanctions, strong Zio regime, majority of US/German pop supported the "self-defense" argument for decades, complete normalisation of Palestinian genocide until the horror reached an unbearable threshold. Etc., etc.
Yes, sanctions are far from perfect, but I strongly believe that a world with Israel santioned would have been a much better place for everyone, including the Israelis (from having to contend with their ideology).
Edit: I'm also aware that my argument is not perfect either. For example, I wouldn't qualify what Cuba has or what Iraq had as sanctions in the sense that I'm talking about: these are to my eyes an economic war of aggression by the US/West. What I'm defending is sanctions on fascist and ethonationalist global/regional superpowers that are engaging in large-scale horror. But I'm aware how leaky my definition is.
However, wide sanctions on large countries such as Russia or Iran are now proven to be quite ineffective in the long run. Even worse, by preventing the creation of a middle-class, you won't have the conditions to start a democracy later, after a possible regime change.
I know it sounds counter-intuitive, but it's what data shows.
And sanctions don't prevent countries from committing atrocities either. What about the deaths and suffering induced by sanctions? 500k Iraqi children were estimated to have died due to the US sanctions. The architect of the policy told that it was "worth it". Was it?
https://www.newsweek.com/watch-madeleine-albright-saying-ira...
- removing their leverage over you is also good.
Even if regime will not change, it will be weaker
I guess that, just like Madeleine Albright, you believe that 500k Iraqi children death caused by US sanctions were "worth it"? (US still wanted to invade after, proof that sanctions worked!)
https://www.newsweek.com/watch-madeleine-albright-saying-ira...
Counter-question/game:
Hypothetically, imagine that you become president of US today, inheriting current situation. What would you do regarding Iran situation?
What is the correct action now in current situation?
Spoiler: I think there is no “correct” solution, somebody will be hurt in the end despite best wishes.
Note: Lower supply of oil and fertiliser affects poorer countries more than the rich ones (possibility of famine in Africa). Current Iran government just killed their own civilians a month ago in thousands to end protests; and repressions will likely repeat as protests are likely to repeat. (Irans populace seem to be quite educated and want some reforms) Ground invasion of Iran would cost a lot of lives - civilian casualties always exist.
But honestly, what would you choose to do?
Germany stills needs and wants russian energy, because they're overpaying a lot currently, but russians don't need the german paper industry anymore.
https://www.cambridge.org/core/journals/european-journal-of-...
In the case of a war, it is of course useful, but it won't solve the long-term issue of the nature of the Russian regime, which has gotten only more entrenched since 2014.
Sanctions on Russia are us not funding the war on Ukraine.