More blasts have been reported in Lebanon, after a series of pagers exploded across the country. In what appears to be a highly sophisticated attack, devices used by the armed group Hezbollah were targeted, and the operation has captivated the security community. Hezbollah blames Israel, with which they have been exchanging cross-border fire for months, and has vowed to retaliate. With multiple reports attributing responsibility to Israeli spy agency Mossad, how much do we really know about what happened?

On this episode, Azadeh Moshiri is joined by the BBC's security correspondent Frank Gardner, to discuss the paper trail behind the planning of the attack, and what it could mean in the context of the wider war.

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