States — Creation — Date on which new State comes into existence — Dissolution of existing State — Whether successor States all coming into existence on the same date — Socialist Federal Republic of Yugoslavia — Process of dissolution — Dates of emergence of successor States — Whether different dates for the different States

State succession — Principles — Vienna Convention on State Succession in Respect of Treaties, 1978 — Vienna Convention on State Succession in Respect of State Property, Archives and Debts, 1983 — Whether reflecting customary international law — Date of succession of States