Some of them are natural islands that have been artificially expanded to support a military presence.
The 12 NM territorial limit for a natural island certainly allows the power owning it to build barracks, airfields, and artillery batteries within that limit. And that prevents other countries from claiming or disputing the island.
The 12 NM territorial limit for a natural island certainly allows the power owning it to build barracks, airfields, and artillery batteries within that limit. And that prevents other countries from claiming or disputing the island.