4Optional Protocol to the Vienna Convention on Diplomatic Relations, concerning Acquisition of NationalityVienna, 18 April 196124 April 1964, in accordance with article VI.24 June 1964, No. 7311Signatories18Parties51United Nations, <i>Treaty Series </i>, vol. 500, p. 223.See <i>"Note:" </i> in chapter III.3.
Participant<superscript>1</superscript>SignatureRatification, Accession(a), Succession(d)Argentina25 Oct 1961 10 Oct 1963 Belgium 2 May 1968 aBosnia and Herzegovina<superscript>2</superscript>12 Jan 1994 dBotswana11 Apr 1969 aCambodia31 Aug 1965 aCentral African Republic28 Mar 1962 19 Mar 1973 Democratic Republic of the Congo15 Jul 1976 aDenmark18 Apr 1961 2 Oct 1968 Dominican Republic30 Mar 1962 14 Jan 1964 Egypt 9 Jun 1964 aEstonia21 Oct 1991 aFinland20 Oct 1961 9 Dec 1969 Gabon 2 Apr 1964 aGermany<superscript>3,4</superscript>28 Mar 1962 11 Nov 1964 Ghana18 Apr 1961 Guinea10 Jan 1968 aIceland18 May 1971 aIndia15 Oct 1965 aIndonesia 4 Jun 1982 aIran (Islamic Republic of)27 May 1961 3 Feb 1965 Iraq20 Feb 1962 15 Oct 1963 Italy13 Mar 1962 25 Jun 1969 Kenya 1 Jul 1965 aLao People's Democratic Republic 3 Dec 1962 aLebanon18 Apr 1961 Liberia16 Sep 2005 aLibya 7 Jun 1977 aMadagascar31 Jul 1963 aMalawi29 Apr 1980 aMalaysia 9 Nov 1965 aMontenegro<superscript>5</superscript>23 Oct 2006 dMorocco23 Feb 1977 aMyanmar 7 Mar 1980 aNepal28 Sep 1965 aNetherlands (Kingdom of the)<superscript>6</superscript> 7 Sep 1984 aNew Zealand<superscript>7</superscript> 5 Sep 2003 aNicaragua 9 Jan 1990 aNiger28 Mar 1966 aNorth Macedonia<superscript>2</superscript>18 Aug 1993 dNorway18 Apr 1961 24 Oct 1967 Oman31 May 1974 aPanama 4 Dec 1963 aParaguay23 Dec 1969 aPhilippines20 Oct 1961 15 Nov 1965 Republic of Korea30 Mar 1962 7 Mar 1977 Senegal18 Apr 1961 Serbia<superscript>2</superscript>12 Mar 2001 dSri Lanka31 Jul 1978 aSuriname28 Oct 1992 aSweden18 Apr 1961 21 Mar 1967 Switzerland12 Jun 1992 aThailand30 Oct 1961 23 Jan 1985 Tunisia24 Jan 1968 aUnited Republic of Tanzania27 Feb 1962 5 Nov 1962
Declarations and Reservations (Unless otherwise indicated, the declarations and reservations were made upon ratification, accession or succession. For objections thereto, see hereinafter.) Netherlands (Kingdom of the)Declaration:"The Kingdom of the Netherlands interprets the words "not, solely by the operation of the law of the receiving State" in article II of the Optional Protocol concerning Acquisition of Nationality as meaning that acquisition of nationality by descent is not regarded as acquisition of nationality solely by the operation of this law."Objections (Unless otherwise indicated, the objections were made upon ratification, accession or succession.) Thailand<i> <center>[See chapter III.3.] </center> </i>1Signed on behalf of the Republic of China on 18 April 1961. See also note 1 under "China" in the "Historical Information" section in the front matter of this volume.In communications addressed to the Secretary-General with reference to the above-mentioned signature and/or ratification, the Permanent Representatives of the Permanent Missions to the United  of Bulgaria, the Byelorussian SSR, Mongolia, Pakistan, Poland, Romania, the Ukrainian SSR and the Union of Soviet Socialist Republics stated that their Governments considered the said signature and/or ratification as null and void, since the so-called "Government of China" had no right to speak or assume obligations on behalf of China, there being only one Chinese State, the People's Republic of China, and one Government entitled to represent it, the Government of the People's Republic of China.In letters addressed to the Secretary-General in regard to the above-mentioned communications, the Permanent Representative of China to the United Nations stated that the Republic of China, a sovereign State and Member of the United Nations, had attended the 1961 Conference on Diplomatic Intercourse and Immunities, contributed to the formulation of the Convention concerned, signed the Convention and duly deposited the instrument of ratification thereof, and that "any statements and reservations relating to the above-mentioned Convention that are incompatible with or derogatory to the legitimate position of the Government of the Republic of China shall in no way affect the rights and obligations of the Republic of China under this Convention".The instrument of accession deposited on behalf of the Government of China on 25 November 1975 contained the following declaration:The "signature" on and "ratification" of this Convention by the Chiang Kai-shek clique usurping the name of China are illegal and null and void.2The former Yugoslavia had signed and ratified the Convention on 18 April 1961 and 1 April 1963, respectively. See also note 1 under “Bosnia and Herzegovina”, “Croatia”, “former Yugoslavia”, “Slovenia”, “The Former Yugoslav Republic of Macedonia” and “Yugoslavia” in the “Historical Information” section in the front matter of this volume.3See note 2 under “Germany” in the “Historical Information” section in the front matter of this volume.4See note 1 under “Germany” regarding Berlin (West) in the “Historical Information” section in the front matter of this volume.5See note 1 under “Montenegro” in the “Historical Information” section in the front matter of this volume.6For the Kingdom in Europe and the Netherlands Antilles. See also notes 1 and 2 under “Netherlands” regarding Aruba/Netherlands Antilles in the “Historical Information” section in the front matter of this volume.7With a territorial exclusion in respect of the Tokelau Islands:“Declares that, consistent with the constitutional status of Tokelau and taking into account the commitment of the Government of New Zealand to the development of self-government for Tokelau through an act of self-determination under the Charter of the United Nations, this accession shall not extend to Tokelau unless and until a Declaration to this effect is lodged by the Government of New Zealand with the Depositary on the basis of appropriate consultation with that territory."