Of course Iran is “closer than ever” to building a bomb. They are on a development program to create one. So by definition every day they get a little but closer, thus making them “closer than ever” each day they do not suffer a significant setback. Of course the philosophical engineering types (yes there are some) would say even setbacks are inevitable and must occur and be overcome. So even their setbacks are things they have to work through, thus they are always making progress, getting closer than ever.
Its going to be very difficult to stop them acquiring one.