By Umaru Fofana Four former Sierra Leonean rebels serving lengthy jail terms in a Rwandan prison have written to the President of the Residual Special Court for Sierra Leone, John Kamanda expressing fear for their safety in Kigali. Issa Sesay and Morris Kallon of the former RUF and Santigie Borbor Khanu and Ibrahim Bazzy Kamara of the former AFRC make several allegations