How drones have come to dominate the battlefield

How drone technology became a multibillion-dollar industry. Plus, Putin's economic record and Xi's biggest test yet.

Unmanned ariel vehicles (UAVs), or drones, have come a long way since their introduction in the first Gulf War in 1991. At the time, they were used just for surveillance and intelligence gathering.

A decade later, a Predator drone fitted with a missile was used by the CIA in an attempt to kill Taliban leader Mullah Omar.

And almost 10 years on from that failed attempt, the assassination of Iran's Qassem Soleimani became the first time a senior military figure has been killed on foreign soil.