Airspace management isn't about sovereignty, but about keeping skies safe, as traffic increases

SINGAPORE - In 1947, when the International Civil Aviation Organisation (ICAO) was set up as a United Nations arm to oversee commercial flights, one of the first things it did was to divide up the sky.

Safety was the priority and the objective was to ensure that the moment a plane took off anywhere in the world, it would be closely watched and guided until it landed.

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