The individual in international law — Extradition — Conditions of — Extraditable crimes — Evidence — What must be proved — What evidence is admissible — Purpose of authentication of evidence — Double criminality — The law of Israel.

Treaties — Conclusion and operation of — Constitutional limitations — Which organ of State of Israel authorized to conclude treaties — The law of Israel.

Treaties — Conclusion and operation of — Ratification — Entry into force — Whether Israel-Switzerland Extradition Convention, 1958, in force — Whether statement of Israel Ministry for Foreign Affairs conclusive — Whether determined by international law — Whether determined by Israeli constitutional law — Whether determined by Israeli law of contract — Signature — Full powers — Whether Israeli Ambassador possessing full powers signed by Minister for Foreign Affairs authorized to sign treaty — Ratification by Israeli Government — Whether authorized — Ostensible authority — Estoppel — Intention of Parties — Meaning of term “ratification” — Relevance of statement of practice in ratification of treaties published in United Nations Legislative Series — Which organ of State of Israel authorized to conclude and ratify treaties — Whether ratification would cure defect in signature — The law of Israel.