A U.N. sanction banned Liberia from selling these, as they were "engaged" in trading them for weapons
.... them to 
keep records of the diamonds they are exporting and importing and how much 
they... [DOC] [TLE] Arms Transfers and Trafficking In Africa - Defense-aerospace.com [PAR] The UN has imposed arms embargoes against Liberia and Somalia and against 
... (2000-2001) arms embargo against Eritrea-Ethiopia failed to deter weapons ....