A U.N. sanction banned Liberia from selling these, as they were "engaged" in trading them for weapons
Using forced labor, stolen goods, and fuel, they engaged in forestry, mining,... [DOC] [TLE] Chapter 5 Tightening the screws in West African arms embargoes [PAR] In this violent situation, the arms embargo was imposed by UNSC resolution 788 
(1992).