Last September, when Iran's uranium enrichment plant buried inside a mountain near the holy city of Qum was revealed, the episode cast light on a wider pattern: Over the past decade, Iran has quietly hidden an increasingly large part of its atomic complex in networks of tunnels and bunkers across the country.
In doing so, American government and private experts say, Iran has achieved a double purpose. Not only has it shielded its infrastructure from military attack in warrens of dense rock, but it has further obscured the scale and nature of its notoriously opaque nuclear effort. The discovery of the Qum plant only heightened fears about other undeclared sites.
SUBSCRIBE AND FOLLOW
Get top stories and blog posts emailed to me each day. Newsletters may offer personalized content or advertisements.Learn more