True, but Iran has a lot of mountains and alot of experiencce of working with those mountains, and it took the USA 50% of its big bombs to make a dent on one location. Iran has ceased all co-operation with the IAEA, so trying to guess what Iran will do next is going to be a challenge. They could easily start working on 20 new underground sites, out of 2 of them will be real. How do you work that out given the IAEA cannot provide intelligence information to the USA and friends? It will take time, yes, eventually they will work it out but losing boots on the ground will be a big problem going forward.