How one US weapon could change the course of the Israel-Iran conflict
Israel says one of its main goals is to destroy Iran's nuclear capabilities. The Fordo nuclear site, which is buried inside a mountain, is one of the most heavily fortified.
There's only one conventional weapon that could destroy it - and only the US is known to have it. BBC Verify's Merlyn Thomas looks at what we know.
Produced by Catherine Karelli. Additional reporting by Thomas Spencer and Paul Brown. Graphics by Mesut Ersoz and Sally Nicholls.
