This is one of the big worries about Iran's nuclear program. 3 IRBMs, which they have, lofting 3 warheads (you need that many to get fairly complete coverage o

This is one of the big worries about Iran's nuclear program. 3 IRBMs, which they have, lofting 3 warheads (you need that many to get fairly complete coverage of the CONUS), they might be able to pull it off. But it would be a terrible gamble for them, and most any scenario besides total failure results in the country being turned into the proverbial "fused glass parking lot".