On May 22, 1990 the Yemen Republic and the People's Democratic Republic of Yemen merged into a single State known as "Republic of Yemen". In a communication of May 19, 1990 addressed to the United Nations Secretary-General, the Ministers of Foreign Affairs of the Yemen Arab Republic and of the People's Democratic Republic of Yemen stated: "all treaties and agreements concluded between either the Yemen Arab Republic or the People's Democratic Republic of Yemen and other States and international organizations in accordance with international law which are in force on 22 May 1990 will remain in effect and international relations existing on 22 May 1990 between the People's Democratic Republic of Yemen and the Yemen Arab Republic and other States will continue". As a result of this declaration, in the present document, in case of an Agreement to which both the Yemen Arab Republic and the People's Democratic Republic of Yemen were parties, the date of acceptance or signature chosen is the one which either the Yemen Arab Republic or the People's Democratic Republic of Yemen accepted/signed first.