Define international air law with its sources and subjects.

International air law = the branch of public international law governing aerial navigation andcivil aviation — the airspace's regime, the aircraft's status, the carriers' liability, and the aviation's security. The sources (the Article 38 ICJ Statute family, specialised): the conventions (Paris 1919, Chicago 1944, the Warsaw-Montreal liability line, the Tokyo-Hague- Montreal security trio), the bilateral air service agreements (the traffic rights' real world — Unit 6.2), the ICAO's SARPs (the Standards and Recommended Practices — the Annexes' quasi- legislative soft-hard law), the custom (the sovereignty principle's pre-conventional life), and the IATA's private ordering (the inter-carrier agreements' faces). The subjects: the states (the sovereignty's holders), the international organisations (ICAO, the IATA's private face), the air carriers (the operators), and the passengers-and-shippers (the protected classes — the liability regimes' beneficiaries).