quantify the domestic and cross-border effects of mergers, and to draw conclusions for the coordination of national merger … industries a merger approval policy based on domestic consumer surplus is too restrictive from the viewpoint of the neighboring … country. We also show that adopting a supra-national policy that approves a merger if and only if it increases the sum of …

We study optimal merger policy in a dynamic model in which the presence of scale economies implies that firms can … the period the merger is proposed. We also find that the abil- ity to commit can lead to a significant welfare improvement …