The general view about regionalism seems to be that it is better to have regionalized and faltered than never to have regionalized at all! Taking this as its point of departure, this study provides a comparative sketch of regionalism in South and Southeast Asia. The book argues that regionalism is here to stay and both imitation and innovation are the preferred strategies for sustaining the process. It points out that economic integration requires certain prior conditions to be fulfilled and does not happen merely because governments wish it to happen.