The Zionist daily Haaretz reported Sunday that US National Security Adviser Tom Donilon had briefed Zionist Prime Minister Benjamin Netanyahu on Washington’s contingency plans for a pre-emptive strike on Iran’s nuclear facilities.

The Zionist daily Haaretz reported Sunday that US National Security Adviser Tom Donilon had briefed Zionist Prime Minister Benjamin Netanyahu on Washington's contingency plans for a pre-emptive strike on Iran's nuclear facilities.

Citing a senior US official, the paper said Donilon met Netanyahu for three hours over dinner in the occupied al-Quds (Jerusalem) two weeks ago and shared with him details of US military capabilities for attacking Iranian bunkers.

"Donilon sought to make clear that the United States is seriously preparing for the possibility that negotiations will reach a dead end and military action will become necessary," Haaretz wrote.

The Zionist officials however, did not formally confirm or deny the report.

"We don't comment on what is discussed in closed diplomatic meetings," one official told media outlets on condition of anonymity.

"But the story is full of factual errors," he added.