The geographically diverse Iranian nuclear weapons program gave it resiliency but also a weakness in that any serious damages to any component will take the program longer to recover. Resiliency should not be mistaken for speed. So regardless of any method used, we are not so optimistic that we can 'destroy' said weapons program, only that we can retard its progress and can make it financially difficult to continue. That difficulty can be extended through military and/or economic measures to make it financially prohibitive to recover, let alone make progress from when it was damaged.