What accounts for the gap between the World Bank's commitments and disbursements?

When does 2+3=4? Or 3+3=4?

We looked closely at the World Bank's report of its commitments and disbursements for FY 2014-18 and were surprised by what we found. The bottom line: a lot of approved assistance is not being disbursed. And this is affecting the World Bank's low-income borrowers most seriously. Read our full report, The World Bank and the (Funny) Math of Delivery, here.