Safeguarding debt sustainability requires action on several fronts: boosting public savings by enhancing domestic revenue mobilization and reducing non-priority outlays, ensuring efficient use of funds by strengthening public investment management, developing local capital markets, and tapping into all available sources of concessional financing (IMF, 2016). This requires concerted efforts to improve the regulatory and macroeconomic environment and enhance countries' capacity to negotiate and implement public-private partnerships that will allow them to effectively balance risk-sharing between the public and private partners. Donors also have an important role to play in boosting private sector investment in infrastructure by lending technical support to governments seeking to attract funds, actively engaging their private sector arms in infrastructure projects, and providing effectively-designed risk-mitigation mechanisms.