Why not lift sanctions as soon as there’s an agreement in principle, and US inspectors are on the ground...unfettered.
Or, must we wait for the entire dismantling of the infrastructure?
I say as soon as they open the door to unfettered access.
IF that ever occurs.
I am also not opposed to free trade between the North and the South (only) while negotiations are underway. That single pipe could be cut if things go sour.
I would let in food only until dismantled