> maybe it wasn't squeezed out by an embargo, but it shows that people can overthrow a government.
Absolutely, I don't question that. And economic issues can be a powerful force toward revolution.
But foreign sanctions always seem to strengthen the regime and provide a convenient excuse even for economic issues that aren't caused by the sanctions. Sanctions seem to make revolution far less likely, which isn't the desired outcome at all.
Edit: maybe it wasn't squeezed out by an embargo, but it shows that people can overthrow a government.