Israel’s Prime Minister Benjamin Netanyahu has urged the world to draw a “clear red line” over Iran’s nuclear programme.

In a speech at the UN, Benjamin Netanyahu said time was running out to stop Tehran from having enough enriched uranium to build a nuclear bomb.

Israel and Western countries suspect Iran is seeking such a capability. Tehran says its programme is peaceful.

Earlier, Palestinian leader Mahmoud Abbas asked the General Assembly to upgrade the Palestinians’ UN status.

Benjamin Netanyahu told delegates at the annual meeting of the assembly that Iran could have enough material to make a nuclear bomb by the middle of next year, and a clear message needed to be sent to stop Tehran in its tracks.

In a speech at the UN, Benjamin Netanyahu said time was running out to stop Tehran from having enough enriched uranium to build a nuclear bomb

“Red lines don’t lead to war, red lines prevent war,” he said.

“Nothing could imperil the world more than a nuclear-armed Iran.”

He said sanctions passed over the past seven years had not affected Tehran’s programme. “The hour is very late,” he told delegates.

“The Iranian nuclear calendar does not take time out.”

He said he was convinced that faced with a “clear red line, Iran will back down”.

He added that he was confident the US and Israel could chart a common path on the issue.

On Tuesday, in his own address to the General Assembly, US President Barack Obama stressed the US would “do what we must” to stop Tehran acquiring nuclear arms.

However, while the Obama administration has not ruled out a military option, it says sanctions and multilateral negotiations with Iran must still be given time to work.

Earlier this month, Secretary of State Hillary Clinton said the US was not prepared to commit to drawing “red lines”.

On Wednesday, Iranian President Mahmoud Ahmadinejad accused Western countries of nuclear “intimidation”.

“Continued threat by the uncivilized Zionists [Israel] to resort to military action is a clear example of this bitter reality,” he told the General Assembly.

In his own speech, Palestinian President Mahmoud Abbas focused largely on the Palestinians’ UN status, saying he would continue to seek full membership.

But he said negotiations had begun with “regional organizations and member states” aimed at adopting a resolution making Palestine “a non-member state of the United Nations during this session”.

“In our endeavor, we do not seek to delegitimize an existing state – that is Israel – but rather to assert the state that must be realized – that is Palestine.”

Currently, the Palestine Liberation Organisation only has “permanent observer” status. Last year, a bid for full-member status failed because of a lack of support at the UN Security Council.

The change would allow Palestinians to participate in General Assembly debates. It would also improve their chances of joining UN agencies and the International Criminal Court.

Last year, Palestinians joined the UN cultural agency Unesco, despite Israeli and US opposition.

Benjamin Netanyahu reaffirmed his country’s opposition to “unilateral declaration of statehood”.

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