World Zone Authority

The World Zone Authority, (TV: The Enemy of the World) also called the World Zone Organisation (PROSE: Doctor Who and the Enemy of the World) and the World Zones Authority, (PROSE: Alien Bodies) was the successor to the United Nations on Earth in the early 21st century. (TV: The Enemy of the World)

Structure
Nations were grouped into Zones answerable to a World President, headquartered in the UN's old New York building. Each Zone had its own Controller but a centralised security agency under a World Security Chief had jurisdiction over the whole body, and visas and passes were needed to move from Zone to Zone. Rockets had replaced planes: the Australia-Hungary flight took two hours. (TV: The Enemy of the World)

Zones included the Arctic, Central Asia, Central Europe, North African, and European. (PROSE: Doctor Who and the Enemy of the World)

History
In the 2010s, the planet was suffering food shortages and the scientist Ramón Salamander gained fame for solving the problem with his Sun Store, which increased grain production in Canada and Ukraine in 2018. Secretly, Salamander was power hungry and in 2013, he'd begun a plan to conquer the planet by tricking scientists into believing a nuclear war had started.

Salamander also began to murder and blackmail politicians to allow his own trusted officials to take top jobs in the Authority. (TV: The Enemy of the World) Arctic Zone Deputy Lars Helvig was found dead in his office, supposedly of suicide, but there was no known reason. Central Asian Zone Controller Mikhail Assevski, a former Olympic Marathon-Swim Gold Medalist, was found drowned 100 metres offshore in Lake Baikal.

Additionally, the Central European Leader Alexander Denes was arrested and killed; Second-in-command Fedorin was killed; and Finance Deputy and expert skier Jean Ferrier, father of Astrid Ferrier, vanished without a trace in perfect weather conditions. In the North African and European Zone, the Deputy Security Leader was Giles Kent, and European Zone Commissioner John Freremont was brutally murdered. No arrests were ever made. (PROSE: Doctor Who and the Enemy of the World)

While this was happening, Salamander had the scientists cause "natural" disasters that he could "warn" against or aid. In 2018, he triggered a volcano in the Central European Zone and discredited the Controller. His plot was discovered and stopped by the Second Doctor. (TV: The Enemy of the World)

In 2054, General Tchike had direct orders from the inner circle of the World Zones Authority to capture thermosystron bombs from the Montana Republican Militia. (PROSE: Alien Bodies)

In the 2150s, during the Dalek invasion of Earth, the House of Commons had a mosaic with the logo of the World Zones Authority. (PROSE: Alien Bodies)