a law on concessions was promulgated in but the implementing subdecree was never approved and accompanying policy and institutional frameworks have not been sufficiently developed the government has recently made highlevel political commitments to adopt necessary reforms a central ppp unit and risk management unit are to be integrated into the ministry of economy and finance and a viability gap fund is being considered to subsidise or guarantee investment projects to make them bankable for the private sector aspects of cambodia s infrastructure challenges are also covered in other chapters