Iran has drawn up designs for a deep underground tunnel with remote-controlled heat and pressure sensors as part of what Western intelligence officials believe are preparations for a secret atomic test.
The existence of the sophisticated sketches for a 400-metre long subterranean test shaft was made public last week in The Washington Post. The welter of documents and disclosures provides what Western governments believe is an overwhelming circumstantial case that Iran is seeking an "Islamic bomb".
Richard Perle, a senior defence official at the time of the Iraq war and who maintains close links to the military, said that 12 B2 bombers, each carrying dozens of precision-guided weapons, could deliver a serious blow to Iran's nuclear ambitions.
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