How have sanctions fared in getting countries to submit of the will of the sanctioner?
That’s pretty much it.
err, to the will.
As part of a general international effort in tacit partnership with a real opposition statesman, they worked in South Africa.
Arguably they worked fine in Iraq, insofar as Saddam could not reconstitute any WMD programs or threaten his neighbours, imaginary inter-continental drones of death notwithstanding.