Los Angeles, Aug 31 - If Iran does not accept international proposals to roll back its nuclear programme by next month, it faces an imminent Israeli strike, a newspaper article said.

In an opinion piece Sunday authored by Micah Zenko who is a political scientist with expertise in national security issues, the Los Angeles Times said Israel will act alone to stop the Islamic Republic from developing a nuclear weapon.

Under the proposals, Iran should suspend its uranium enrichment programme in exchange for a UN Security Council commitment to forgo a fourth round of economic and diplomatic sanctions.

Quoting Michael Mullen, chairman of the US Joint Chiefs of Staff, the newspaper said: 'The window between a strike on Iran and their getting nuclear weapons is a pretty narrow window.'

However, if Iran does not budge, Israel would attack its suspected nuclear weapons facilities without even informing the US, the newspaper said.

President Obama will learn about the operation from CNN rather than the CIA and Israel would rather explain later than ask for approval in advance of launching pre-emptive attacks, the newspaper said.

Those hoping that the Obama administration will be able to pressure Israel to stand down from attacking Iran as diplomatic efforts drag on are mistaken, the LA Times said.

It said Israel never informed the US before carrying out such four major military operations in the past.