Federalism relies on a process of conscious decision-making by political elites, attracted by the desire to avoid war by encouraging states to transfer at least a measure of their sovereignty to a higher, federal body --> pooled sovereignty.

Regional cooperation reflects the recognition that specific activities can be performed more effectively through collective action than by states acting individually.

This is why regional integration has a predominantly economic character, as this is the area in which the functional benefits of cooperation are most evident.

That it overemphasizes the willingness of states to hand over responsibilities to functional bodies.