Does Iran want to be a suicide terrorist nation?

From James Taranto's The Best of the Web in today's Wall Street Journal Online:

London's Independent, meanwhile, has this report on Iran's nuclear program:

"Another senior Iranian official said that with almost 3,000 centrifuges now running at Natanz, 'we have at the moment enough centrifuges to go to a bomb.' But the official added that Iran was barred by its own security and defence doctrine, by parliament, and by a religious fatwa issued by the Supreme Leader, from building a bomb. The official added that if Iran produced a single bomb 'what is it good for? If we attack Israeli with one bomb, America would attack us with thousands of bombs. It's suicide.'"

Why are we not reassured by a fundamentalist Muslim regime's promises not to build a bomb and use it to commit suicide?