Sure we did it with Dresden. Mecca has about 700,000 residents. So many to kill, so little time.
In the hypothetical posed to Cong. Tancredo by WFLA host Pat Campbell, Islamic terrorists explode nuclear devices in six (6), seven (7) or eight (8) U.S. cities. If that happened how many Americans would the Islamic terrorists kill?
Just launch a trident or minuiteman ii missile.. most bang for the buck.. and best yet, no survivors in mecca.