The AETS Consortium has been mandated by the Delegation of the European Union to Nigeria and ECOWAS to undertake a mid-term evaluation of the support to regional economic integration and trade. As such, the purpose of this contract is to assess the overall impact of the support to Regional Economic Integration and Trade programme, with reference to the provisions in the programmes Financing Agreement, log-frame and work-plans. The Programme will be evaluated using the standard OECD-DAC assessment criteria along with a particular focus on questions of longer term impact and sustainability.