Prime Minister Benjamin Netanyahu will give a speech about the threat of Iran's nuclear program in an address to the United Nations General Assembly in New York next month, the prime minister's office said Thursday.

According to the statement, Netanyahu will arrive in New York on September 27 for a three-day visit and deliver his speech that same day, during a special gathering in which various state leaders will also speak.

Thus far, a meeting between Netanyahu and U.S. President Barack Obama, who will also take part in the General Assembly event, has not been scheduled, but officials believe such a meeting will be set in the coming weeks.

Netanyahu on Thursday condemned a speech by Iranian Supreme Leader Ali Khamenei, who launched a venomous attack against Israel in a speech inaugurating the Non-Aligned Movement conference on Thursday.

"120 countries heard blood libel against Israel in Tehran today, and kept quiet," Netanyahu said. "This silence must stop and for this reason I will go to the UN to tell the truth about the terror regime of Iran which poses the greatest threat to world peace."

In his speech, Khamenei denounced what he said was Israel's brutal suppression of Palestinian rights.

"Even now after 65 years the same kind of crimes marks the treatment of Palestinians remaining in the occupied territories by the ferocious Zionist wolves," Khamenei was quoted by the Fars news agency as saying, adding that Israel commits "new crimes one after the other and create new crises for the region."

The Supreme Leader added that the "Zionist regime, which has carried out assassinations and caused conflicts and crimes for decades by waging disastrous wars, killing people, occupying Arab territories and organizing state terror in the region and in the world, labels the Palestinian people as 'terrorists,' the people who have stood up to fight for their rights."