How spies, soldiers and the public should use open-source intelligence

When into the valley of Death rode the six hundred, William Howard Russell’s account of the charge of the Light Brigade, a failed British attack on Russian cannons in the Crimean war in 1854, took about three weeks to appear in the. Last November, after Ukrainian soldiers and pushed Russian forces over the Dnieper, hours, if not minutes, elapsed before images were shared with the entire world on social media and messaging apps.