sentences:  During the period of 1982 to 1987 Hoang Co Minh also served as the organization's chair, until he was ambushed by Vietnamese soldiers while leading a group of members into Vietnam.In the period that followed, Viet Tan remained an underground organization with undisclosed projects and campaigns.On September 19, 2004, in a highly publicized event in Berlin, Germany, the organization stepped out as a public organization, announcing the dissolution of the NUFRONLIV, and a recommitment to establish democracy in Vietnam through peaceful means.