Commission Regulation (EC) No 689/2002 of 22 April 2002 amending, for the fifth time, Council Regulation (EC) No 1705/98 concerning the interruption of certain economic relations with Angola in order to induce the "União Nacional para a Independência Total de Angola" (UNITA) to fulfil its obligations in the peace process, and repealing Regulation (EC) No 2229/97