Report: US has upgraded ‘bunker buster’ bomb that could be used should Iran talks fail

The Pentagon has upgraded its Massive Ordnance Penetrator, shown here in a 2007 version, as talks were progressing in recent months on Iran’s nuclear program. Photo: ASSOCIATED PRESS

The Pentagon has been upgrading the biggest bunker-buster bomb in its arsenal even as talks continue over Tehran’s nuclear program, readying a weapon that could destroy Iran’s facilities if negotiations fail, the Wall Street Journal reported on Friday.

Work to improve the design, guidance systems and anti-jamming capabilities on the so-called Massive Ordnance Penetrator began before the latest round of negotiations with Iran started.

The most recent test of the 30,000-pound device was in mid-January, the Journal said.

The bomb was created to give US President Barack Obama options for attacking fortified facilities like Iran’s Fordow nuclear installation, which is built into a mountain…