5.3 The Hague Convention, 1970

The second pillar — the hijacking's suppression (the offence's definition): The offence's definition: the unlawful seizure — the force-or-threat aboard to seize-or- exercise-the-control of the aircraft (the in-flight requirement: the doors-closed-to-the-doors- opened formula); The jurisdiction's cascade: the flag state's compulsory jurisdiction + the landing state's duty (the aircraft lands with the alleged offender aboard → the state must exercise jurisdiction) + the custody's-and-prosecute-or-extradite discipline (the aut dedere aut judicare: the offender found on the territory must be prosecuted or extradited); The hijacker's non-immunity (the political-offence exception's denial: the extradition's political-character bar excluded for the hijacking — the treaty's hard core); The aircraft-and-passengers' return (the Tokyo duty's strengthening).