Raise The Costs for Tehran, Not Regime Stature
Rather than the wholesale abandonment of US efforts to contain Iran, how about Raising the Costs for Tehran?
Just asking an open-ended question...
Read the two articles. The first makes excellent observations, questionable conclusions and very poor recommendations. The second considers ways to make existing sanctions perhaps actually work.
As Michael Jacobson writes, "There has been far too little attention paid to how effectively the measures are being implemented." It's not a matter of failed sanctions inasmuch as it is a matter of actual implementation and enforcement - as are so many solutions handed down from the UN. Paper is as paper does.
Sanctions may indeed be an ineffective deterrent, but if they are barely implemented, it is rather tough to determine that it was the sanctions themselves that failed.
Curfew only matters if it's enforced.