World Zone Authority

The World Zone Authority was the successor to the United Nations on Earth in the early 21st century. 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 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)

In 2018, the planet was suffering food shortages and the scientist Ramón Salamander gained influence for solving the problem; the Sun Store increased grain production in Canada and Ukraine. Secretly, Salamander was power hungry, murdering politicians to allow his own trusted officials to take top jobs in the government. He gained direct power over the Central European Zone through use of "natural" disasters he created, discrediting one Controller who hadn't heeded his "warnings". This 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)

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

Known zones

 * Arctic
 * Arctic Zone Deputy, Lars Helvig. Found dead in his office, supposed suicide but there was no known reason. (PROSE: Doctor Who and the Enemy of the World)
 * Central Asian
 * Controller, Mikhail Assevski. Assevski was a former Olympic Marathon-Swim Gold Medalist but found drowned 100 metres offshore in Lake Baikal.
 * Central European - centred on Hungary, led by Ramón Salamander
 * Former Leader: Alexander Denes (arrested and killed by Salamander)
 * Former Second-in-command: Fedorin (killed by Salamander)
 * Former Finance Deputy, Jean Ferrier, father to Astrid Ferrier. He was an expert skier but vanished without a trace in perfect weather conditions. (PROSE: Doctor Who and the Enemy of the World)
 * North African and European Zone
 * Former Deputy Security Leader: Giles Kent
 * European Zone Commissioner, John Freremont. Brutally murdered. No arrests were ever made. (PROSE: Doctor Who and the Enemy of the World)

Behind the scenes zones
The organization is called the World Zone Authority on-screen, the World Zones Organisation in the novelisation, and the World Zones Authority in Alien Bodies.