Back to V Up to Table of Contents Y - Z Country Name Date of Signature Date of Ratification Type Enter into Force Yemen 12-Jun-92 21-Feb-96 R 21-May-96 Yugoslavia 8-Jun-92 3-Sep-97 R 2-Dec-97 Zambia 11-Jun-92 28-May-93 R 21-Mar-94 Zimbabwe 12-Jun-92 03-Nov-92 R 21-Mar-94