In spite of these achievements, Cambodia still faces a number of development challenges, including weak public service delivery, which impede inclusive development, ineffective management of land and natural resources, environmental sustainability, and good governance. Underlying the quality, adequacy, and efficiency of public services is the ability of the government to generate additional revenue for important public spending and investment requirements, to spend the available resources efficiently and accountably, and to ensure timely commitments and payments for the operation of vital public services and public investment. Addressing this will help to stimulate the agricultural and tourism sectors to once again become strong engines of growth supporting poverty reduction, as well as to expand and sustain growth and promote diversification in the manufacturing sector.