Abhinav Ghosh wrote a review of Memory in the Mekong in the Harvard Educational Review. Here are some key excerpts:

Underlining Anderson’s theorization of nations as imagined communities is a perspective that these communities are inclusive and homogeneous, where people assemble together under a common language or shared cultural artifacts. Memory in the Mekong: Regional Identity, Schools, and Politics in Southeast Asia, edited by Will Brehm and Yuto Kitamura, complicates Anderson’s conceptualization by distinguishing national and regional identity formation in Southeast Asia as exclusionary, contested, and incomplete. 

…

This seems to closely reflect the overall contribution of the volume—to not be overtly critical or dismissive of the educational attempts to forge a regional identity in the Mekong, but to show the complexities and nuances that come with such work.

Indeed, every chapter in the book demonstrates this with remarkable clarity.

…

This parting thought is, perhaps, illustrative of the biggest strength of this volume: the ability to highlight and hold tensions and complexities without offering generalizable solutions or simplistic conclusions. Across the chapters, even though readers are transported from one country to another, the thematic consistency of the book affords them the opportunity to see similarities and differences. 

…

In the foreword to this book, renowned Thai historian Thongchai Winichakul notes that a scholarly enterprise “succeeds when it leaves readers with more questions than answers” (x). On that count, this volume delivers aplenty.