For example, political instability, a local conflict or whatever may induce instability and sometimes even panic on the world financial markets and thus affect many people's lives not necessarily directly at the place of the very problem.
I believe these are the main reasons, why the Union establishes such a kind of political cooperation. Today, even "The European security and defence policy" as a part of the CFSP is implemented. It could lead to a common defence and military cooperation of the Member States in a near future. The Fifteen now declares that Europe's defence needs a change and they are decided to take responsibility for their own security increasingly into their own hands.
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