International negotiations on climate change have been dogged by mutual recriminations between rich and poor countries, constricted by the zero-sum arithmetic of a shrinking global carbon budget, and overtaken by shifts in economic power between industrialized and developing countries. To...

Trade and investment in services are inhibited by a range of policy restrictions, but the best offers so far in the Doha negotiations are on average twice as restrictive as actual policy. They will generate no additional market opening. Regulatory concerns help explain the limited progress. This...

Although water variability has already been observed across river basins, climate change is predicted to increase variability. Such environmental changes may aggravate political tensions, especially in regions that are not equipped with an appropriate institutional apparatus. Increased...

This paper shows that the increased policy-selectivity of aid allocations observed in recent years provides recipient countries an incentive to improve policies. The paper estimates that a change in the World Banks Country Policy and Institutional Assessment policy index from 1.5 to 2 for a...

This paper investigates the impact of World Bank development policy operations on the quality of economic policy during the period 1998-2015. A new theoretical framework distinguishes among three effects that have been conflated hitherto: (a) marginal impacts of additional policy actions within...

This paper compiles project-level data from the World Bank's lending history to describe patterns and the composition of its portfolio. The paper focuses particularly on the effect of countries' transition from International Development Association to International Bank for Reconstruction and...