— #Iran booby-trapped tunnels storing its highly enriched uranium and collapsed their entrances after learning the U.S. was considering a ground operation to seize the material, making access to roughly half a ton of the stockpile far more complex and dangerous, sources familiar with U.S. intelligence told CNN, as reported by Haaretz. Chairman of the Joint Chiefs Gen. Dan Caine was urgently briefed in late May on plans for a ground operation to seize the uranium by force.