History of UN development cooperation – more why less how?

In The UN and Development: From Aid to Cooperation Odén (2010) reviews the work of that name by Olav Stokke (2009). Odén opines that “Stokke has successfully woven a comprehensive, detailed and thought-provoking UN aid and development tapestry. …. it will certainly be used as a central reference work for scholars interested in the history of UN development cooperation, including its underlying ideas and driving forces.” He also says, however, that he “would have preferred more of ‘why’ and less of ‘how’“. What do other authors have to say about the ‘why’?

ODÉN, B. The UN and Development: From Aid to Cooperation. Forum for Development Studies, Vol. 37, No. 2, June 2010. 269-279.
STOKKE, O. 2009. The un and development: from aid to cooperation, Indiana Univ Pr.