FDI. -- Foreign direct investment ; regional integration ; Mercosur ; ASEAN ; SAARC ; SADC … investment (FDI). But regional integration agreements (RIAs) as well as FDI are too diverse to allow for generalized verdicts …. Our case studies on Mercosur in Latin America, ASEAN and SAARC in Asia, and SADC in sub-Saharan Africa caution against …