Not least of which is how to finance the investments needed to achieve them.
Estimates suggest that developing countries face a $2.5 trillion annual financing gap to meet the SDGs. Other studies conclude that the challenge of meeting this annual financing gap is substantial in low-income countries, which would require additional annual spending of 15.5 percentage points of GDP in 2030, focused relatively evenly on infrastructure and education and health.
One way countries can make these increased investments is through debt financing.
Read the full article at: http://blogs.worldbank.org/voices/facing-substantial-investment-needs-developing-countries-must-sustainably-manage-debt