So here's a question. Which international body has the right to declare an airspace which is over international waters a part of country X or Ys FIR? Because FIR boundries for many countries that have a coastline stretch well into international waters. Take Oceanic FIRs for example. If Qatar were to declare the airspace above the country no longer in Bahrain FIR and closed to all international traffic who could stop them? And if they then declared the airspace north of Qatar up to the Iran border belonged to them who could stop them? Why does Bahrain have a right to manage the airspace above Qatar and not Qatar itself.
Hypothetically speaking, what right does the Bahrain airforce have to intercept an aircraft flying in the Bahraini FIR but far away from the island of Bahrain. Lets say someone were to fly into Mumbai Oceanic close to the Omani FIR boundary, could the Indian Air Force intercept them? I mean sure this would be stupid as they would be endangering the lives of hundreds of pax on civilians airliners crisscrossing through Mumbai Oceanic. But legally speaking does the Indian Air Force have any jurisdiction to intercept an aircraft that far away from its own land borders?