An Italian Air Force fighter jet flies during a NATO exercise in Poland.

An Italian Air Force fighter jet flies during a NATO exercise in Poland. / SOPA Images/LightRocket via Getty Images)

The majority of European members of NATO are not spending as much on defense as they agreed to. But that may change as the European Union considers a move to a "war economy." Today, we examine what that means and what barriers to a "war economy" look like.

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Tags: NATO  European Union  The Indicator  defense industry