Report of the fifteenth meeting of the CGIAR Oversight Committee, held in Brasilia on May 23, 24, and 27, 1998 in conjunction with the CGIAR Mid Term Meeting 1998. The report was presented orally at MTM98 by Committee Chairman Andrew Bennett, and this written version was circulated later.Under the heading 'Center Governance' the Committee considered the recently completed external program and management reviews (EPMR) of CIMMYT, IFPRI, and IRRI, and requested a briefing on the situation at CIFOR in the context of turbulence in Indonesia. Given the recurrent funding problems of a number of IARCs, the Committee pointed to the need for both forward planning, and flexibility on the part of IARCs in case funding shortfalls could not be resolved....