State Date of signature Philippines Poland 18 June 1986 b/ 13 January 1986 Portugal a/ Date of receipt of the instrument of ratification or accession 4 February 1985 Romania 26 July 1989 9 February 1989 18 December 1990 b/ Russian Federation a/ Senegal 10 December 1985 3 March 1987 4 February 1985 21 August 1986 Seychelles Sierra Leone 5 May 1992 b/ 18 March 1985 Somalia 24 January 1990 b/ South Africa 29 January 1993 Spain a/ 4 February 1985 21 October 1987 Sudan 4 June 1986 Sweden a/ 4 February 1985 8 January 1986 Switzerland a/ 4 February 1985 2 December 1986 Togo a/ 25 March 1987 18 November 1987 Tunisia a/ 26 August 1987 23 September 1988 Turkey a/ 25 January 1988 Uganda 2 August 1988 3 November 1986 b/ Ukraine 27 February 1986 United Kingdom of Great Britain and Northern Ireland d/ 15 March 1985 United States of America 18 April 1988 Uruguay a/ Venezuela 4 February 1985 15 February 1985 Yemen 24 February 1987 8 December 1988 24 October 1986 29 July 1991 5 November 1991 b/ Yugoslavia (Serbia and Montenegro) a/ __________ 18 April 1989 10 September 1991 a/ Made the declaration under articles 21 and 22 of the Convention. b/ Accession. c/ Succession. d/ Made the declaration under article 21 of the Convention. -80-