Iran on Sunday rejected calls by Israeli Prime Minister Ariel Sharon for an international coalition against Iran, saying Israel was not in a position to threaten Iran. "Comments by officials of the Zionist regime are not worth an answer," Iran's Foreign Ministry spokesman Hamid Reza Asefi said. "The Zionist regime is not eligible to express any ideas since it is the source of tension, crisis and trouble in the region." He said Israel's actions show that the Jewish state is opposed to peace and security in the region and is instead intent on destroying regional trust.