why are you still putting "disengagement" in quotes? if south korea prevents food from entering north korea, does that mean according to you south korea is currently "engaged" in north korea?
in both cases the countries border with multiple countries and one country doing whatever it wants with its own borders does not constitute a blockade.
now answer the damn question: didn't they do that in south lebanon and then quickly rockets appear near the border and nearby towns get evacuated semi daily and didn't the same happen during gaza disengagement?