By Kyle Orton (@KyleWOrton) on 6 August 2017

A year ago, I wrote a report documenting the biographies of Islamic State (IS) leaders and something of the structure of the organisation. Since then, the intricacies of the structure have been further revealed, even as it has somewhat crumbled in practice. The caliphate—the statelet built by IS—has been significantly degraded: the Iraqi “capital”, Mosul, has fallen, and operation to clear the Syrian “capital”, Raqqa, is underway. More significantly, upwards of 40% of those profiled have been killed, so it seemed an opportune moment for an update on who currently leads the world’s most infamous terrorist movement.
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