And how, exactly, did Obama stop Iran from getting nukes? He sent them pallets of cash, in return for which they agreed not to enrich uranium to weapons grade.
Problems:
1) Why enrich uranium at all? Iran has huge oil reserves. It has zero need for nuclear power plants.
2) No sure inspection plan. Each batch of uranium must be checked to assure it is not too enriched.
3) Obama and Hillary showed with Benghazi that they could be pushed around without consequences. Iran saw this. Trump, on the other hand, is a rottweiler, not a golden retriever. Climb over the fence, get bitten.
