... since the trends that did tackle extreme poverty and world hunger, are the macro-economic trends of the last decades:
"The number of people living in extreme poverty (subsisting on less than one dollar per day) fell by 400 million between 1981 and 2001, despite rapid population growth. In 1970 nearly two in four adults in developing countries were illiterate; now it is only one in four. And life expectancy in developing countries has increased by more than 20 years since 1950. Too many countries—especially in sub-Saharan Africa—still lag behind economically, but the last decade or so has seen improvements in governance and the return of growth across much of the continent. And even where economic growth has stagnated, there has often been major progress on some social indicators."
[Goldin, Rogers, Stern (World Bank):"We must tackle development problems at the level of the economy as a whole"]
(Comment: These trends of course are mostly unrelated to World Bank or IMF policy and are also not the result of foreign aid, but of the industrialization of the economic giants India and China and the East Asian Tigers !)
update: "Why Empirical Macroeconomics is Important":
Sala-i-Martin (2006, QJE): "The World Distribution of Income: Falling Poverty and... Convergence, Period" and the Discussion in the Popular Press