Why can't NATO and the EU just get along? (Brookings)

For anybody who spends time in Brussels, one of the more baffling mysteries in the self-styled “capital of Europe” is the lack of communication between the North Atlantic Treaty Organization and the European Union. Even though these vital Western institutions are located just a few miles from each other, there is a striking absence of policy coordination between them. This, at a time when the European continent is confronting multiple crises whose solutions will require ingenuity, innovative thinking, and smarter use of resources.

http://www.brookings.edu/blogs/order-from-chaos/posts/2015/09/28-strategic-partnership-nato-eu-drozdiak