The binding legal principles are: (1) Under section 231(1) of the Constitution, treaty-making is the responsibility of the national executive collectively; when the President exercises this power under section 85(2), it must be done collaboratively with Cabinet, and the President may properly authorize ministers to sign treaties once the decision to enter into them has been taken. (2) The Extradition Act 67 of 1962 constitutes framework legislation that provides the comprehensive domestic legal mechanism for implementing extradition agreements; once an extradition agreement is validly entered into and approved by Parliament under sections 2-3 of the Act and section 231(2) of the Constitution, it either becomes law through the Act serving as anticipatory enactment under section 231(4), or the Act gives domestic legal effect to the international obligations created, without requiring separate implementing legislation. (3) In the event of conflict between provisions of an extradition agreement and the Extradition Act, the Act prevails. (4) Courts will not entertain belated challenges to parliamentary procedures absent proper joinder of affected parties, timely raising of issues, and evidence of actual irregularity; a strong presumption exists that legislatures follow constitutionally-mandated procedures.