(CBS/AP) UNITED NATIONS - Israeli Prime Minister Benjamin Netanyahu told world leaders and diplomats Thursday that nothing could imperil the world more than a nuclear-armed Iran.
"To understand what the world would be like with a nuclear-armed Iran, just imagine a world with a nuclear-armed al Qaeda," Netanyahu said in his address at the U.N. General Assembly.
His demand that President Obama declare "red lines" that would trigger an American attack on Iran's nuclear facilities has been rejected in Washington and sparked a public rift between the two leaders.
The Israeli leader didn't shift in his address Thursday: "At this late hour, there is only one way to peacefully prevent Iran from getting atomic bombs, and that is by placing a clear red line on Iran's nuclear weapons program."
Netanyahu emphasized his point by actually drawing a red line on a diagram of a bomb showing the stages of nuclear enrichment.
He told the gathering that Iran will be on the brink of having enough enriched uranium to build a bomb by next spring or summer, citing reports from the U.N.'s own International Atomic Energy Agency.
At the beginning of his address, he disputed Iranian leader Mahmoud Ahmadinejad's statement from earlier in the week that Israel has "no roots" in the Middle East. Netanyahu told the gathered world leaders and diplomats: "The Jewish people have come home. We will never be uprooted again."
During his three-day visit, Netanyahu is scheduled to meet with U.N. Secretary-General Ban Ki-Moon, EU foreign policy chief Catherine Ashton, Canadian Prime Minister Stephen Harper — who recently expelled the Iranian ambassador from his country — and U.S. Secretary of State Hillary Clinton. He is not scheduled to meet Mr. Obama; however, the White House said Thursday Mr. Obama would have a follow-up call with Netanyahu Friday.
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While Israel is convinced that Iran is pursuing a nuclear weapon, American officials believe Iran has not yet made a final decision to take the plunge, even as it develops much of the infrastructure needed to do so.
Mr. Obama has repeatedly said he will not allow Iran to gain nuclear weapons and has said the U.S. would be prepared to use force as a last resort. But in an interview Sunday with CBS' "60 Minutes" he also vowed to "block out any noise that's out there" on the issue, in an apparent swipe at Netanyahu.
(Below, watch Part 1 of Mr. Obama's interview with Steve Kroft)
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Netanyahu claims international diplomatic efforts and economic sanctions have failed, but a new report from the Israeli Foreign Ministry, leaked Thursday, concludes that sanctions are hitting Iran hard. According to the report, details of which appeared in the Haaretz newspaper, Iran's oil exports declined by over 50 percent in the past year and sanctions on Iran's central bank have made it difficult for the regime to access its foreign currency.
An Israeli official confirmed the new report but refused to elaborate on it. The official spoke on condition of anonymity because he was not authorized to discuss internal government documents.
Netanyahu's time at the U.N. podium gives him an opportunity in front of the international community to press his case once again, perhaps in a final plea before Israel takes matters into its own hands. Israeli leaders have issued a series of warnings in recent weeks suggesting that if Iran's uranium enrichment program continues it may soon stage a unilateral military strike, flouting even American wishes.
The Obama administration has urgently sought to hold off Israeli military action, which would likely result in the U.S. being pulled into a conflict and cause region-wide mayhem on the eve of American elections.
Such an attack would almost certainly lead to retaliatory Iranian missile strikes on Israeli population centers. On Sunday, Iranian leaders suggested they may strike Israeli preemptively if they feel threatened.
Israel considers a nuclear-armed Iran to be an existential threat, citing Iranian calls for Israel's destruction, Iran's development of missiles capable of striking the Jewish state and its support for hostile Arab militant groups.
Also Thursday, on the sidelines of the General Assembly, key figures will gather for a Friends of Yemen meeting that will be co-chaired by British Foreign Secretary William Hague, Yemen's President Abed Rabbo Mansour Hadi and Saudi Arabia's Deputy Foreign Ministe Abdulaziz bin Abdullah Abdullah. The meeting will produce a communique aimed at generating support for Hadi, who took office in February after more than a year of political turmoil and is now trying to steer his country's democratic transition.
Later, political directors from the United States, Russia, China, Britain, France and Germany will be meeting on the Iranian nuclear issue.
A few hours before Netanyahu flew to the U.S., Ahmadinejad, known for past fiery denunciations of the United States and Israel, spoke at length about his vision for a "new world order" during his speech at the U.N. His speech on Wednesday happened to fall on Yom Kippur, the most sacred day on the Jewish calendar, devoted to fasting, prayer and introspection.
In an interview broadcast on "CBS This Morning" Wednesday, Ahmadinejad downplayed one of his most infamous references to Israel - saying "wiped off" the map - and insisted that "we have never threatened them."(Watch at left)
"We say that occupation should be done away with," said Ahmadinejad. "Warlike behavior should be done away with. Terrorism should be done away with. The killing of women and children should be done away with. Has the Zionist regime done anything other than this during the last 65 years? No, they haven't."
