"What they have done is basically destroyed the centrifuges, destroyed the research center and all the facilities. So it'd be very difficult for them to just sort of make any more enriched uranium, but they might still have... ten bombs worth could be available and it's going to be very difficult to know," said Australian National University Department of Nuclear Physics and Accelerator Applications Honorary Associate Professor, Tony Irwin.

While the enriched uranium can be transported, Irwin added that having the enriched uranium did not mean that Iran had a weapon.

"You've then got to do a deconversion from UF6 to uranium metal. So you need a plant to do that. And then you've got to have a delivery system. You've got to have a bomb design, and then a delivery system for the bomb as well. And if you're going to try and get it down to a size, you can put on a missile. You need quite advanced technology to be able to do that," he said.

The United States dropped the biggest conventional bombs in its arsenal on Iranian nuclear facilities on Sunday, using bunker-busting munitions in combat for the first time to try to eliminate sites including the Fordow uranium-enrichment plant dug into a mountain. The International Atomic Energy Agency has not been able to carry out inspections in Iran since Israel started its military strikes on nuclear facilities there on June 13.

--Reuters--