Cameroon and Chad are tightening border security to halt the illegal flow of diamonds...said to be sponsoring armed groups in neighboring Central African Republic, the governments of the two countries said...In an interview...Cameroon's mining minister Emmanuel Mbonde said the government has taken measures to address the growing problem, including deploying more border staff to identify all diamonds and assure their traceability. Only certified diamonds are authorized to be exported. CAR was officially suspended from global diamond trade last November by the Kimberly Process Certification Scheme...Jaff Napoleon, a member of [Cameroonian] civil society, says...[following] Cameroon's admittance in the KPCS last year[, if it] allows the conflict diamonds to transit through its territory, it may also be suspended.