A Saudi official has condemned a radical US Republican presidential candidate's recent comment that the best way to deter a nuclear terrorist attack on America would be to threaten to retaliate by bombing the Islamic holy sites, Mecca and Medina. Abdul-Mohsen Al-Sheik, head of Mecca's municipal council, said he was disappointed that the Republican Party did not issue an apology for Representative Tom Tancredo's remarks. "Neither ... Tancredo nor anyone else can strike the Kaaba in Mecca," Al-Sheik said in a statement released late Monday. The Kaaba is a cube-shaped stone structure draped in black cloth that Muslims around the world face during daily prayers. Muslims believe Abraham built it. "If this candidate had a minimum knowledge of history, then this site would be holy for him before it being holy for Muslims because no adherent to heavenly religions doesn't know Abraham and (his son) Ismail," he added.