Quote

...
A US National Intelligence Estimate two years ago concluded that Iran had ended its nuclear arms research programme in 2003 because of the threat from the American invasion of Iraq. But intelligence sources have told The Times that Tehran had halted the research because it had achieved its aim — to find a way of detonating a warhead that could be launched on its long-range Shehab-3 missiles.
...

Quote

...
The non-nuclear, 30,000-pound Massive Ordnance Penetrator, or MOP, which is still being tested, is designed to destroy deeply buried bunkers beyond the reach of existing bombs.

If Congress agrees to shift enough funds to the program, Northrop Grumman Corp (NOC.N)'s radar-evading B-2 bomber "would be capable of carrying the bomb by July 2010," said Andy Bourland, an Air Force spokesman.

"The Air Force and Department of Defense are looking at the possibility of accelerating the program," he said. "There have been discussions with the four congressional committees with oversight responsibilities. No final decision has been made."

The precision-guided weapon, built by Boeing Co (BA.N), could become the biggest conventional bomb the United States has ever used.

Carrying more than 5,300 pounds of explosives. it would deliver more than 10 times the explosive power of its predecessor, the 2,000-pound BLU-109, according to the Pentagon's Defense Threat Reduction Agency, which has funded and managed the seed program.
...