Haaretz - Netanyahu asked Panetta to approve sale of bunker-busting bombs, U.S. official says
Haaretz reports: "Prime Minister Benjamin Netanyahu requested the United States approve the sale of advanced refueling aircraft as well as GBU-28 bunker-piercing bombs to Israel during a recent meeting with Defense Secretary Leon Panetta, a top U.S. official said on Tuesday."

Haaretz - U.S. denies Obama promised bunker busters to Netanyahu
Haaretz reports: "President Barack Obama and Israeli Prime Minister Benjamin Netanyahu did not discuss in their meetings this week a reported Israeli request for advanced U.S. military technology that could be used against Iran, the White House said on Thursday."

Comment: Strategic ambiguity - keep everyone guessing.