TEHRAN, July 23 (MNA) — "All international organizations, including the United Nations and the Security Council, are dead and are being exploited," Iranian Foreign Ministry spokesman Hamid-Reza Asefi said here on Sunday, in reference to world bodies' failure to properly respond to the Zionists' atrocities in Lebanon. Over 30 anti-Israel resolutions of the Security Council have been vetoed by the United States so far, and this is actually a green light from the U.S. and international organizations to the Zionist regime to commit more crimes, he told reporters at his weekly press briefing. On Iran's nuclear dossier, Asefi said that if the 5 1 group changes its attitude, Iran will also make some changes in its policies. Of course, any unwise action by the 5 1 group will be followed by a proportionate response by the Islamic Republic of Iran, he added.