Nearly every global transaction of significant size will be subject to merger control reviews in multiple jurisdictions across Asia and the Pacific. The coordination of such reviews across disparate and sometimes widely varying regimes can have a significant impact on deal timing, certainty and value. This impact may be felt not only through jurisdictional questions of where to file, but also through the ongoing management of a multi-stream review, including filing preparation, anticipation of review timelines, merits review and even remedies negotiations.