I would consider pakistan and north korea much less advanced than iran. I would say pakistan is definitely about 10 years behind iran in terms of industrialization. If pakistan can make nukes, then I would consider iran made them 10 years ago. It is not that difficult, Enriched uranium coming into contact with a detonator. It is probably simpler than a convential bomb.
15 police officers killed in Colombia helicopter crash (Reuters)
from the article: Iran official: U.S. cannot stop us from cutting off world oil supply