M'eh... The missile defense that we currently set there works better and will stop the med. range missiles that Iran may try to launch, however that was just another piece of what we do there that is expensive and something that maybe the people who live there should do for themselves...First off, I would agree that Germany, Holland and the Scandinavian countries need to spend more on defence. France and the UK spend around 2.5% of GDP as against the 4% spent by the US.
As to the missile shield, it is not wanted by Europe, it is just another incredibly expensive white elephant dreamed up by the military industrial complex and Bush. The article below details the reasons why it will not work, it only needs updating to say that Romania is now hosting the missiles instead of the Czech Republic and Poland.
http://www.visualeconomics.com/military-spending-worldwide/
http://www.reuters.com/article/idUKTRE54J52020090520
The reality is that those nations can spend less because we supplement their defense with our presence. As I said, I'd be happy to stop that. While cuts in defense wouldn't be popular among my party or among conservatives in general, every single one of us will have to tighten that belt just a bit on some of our favorite things. It is simply irresponsible, if not directly immoral, to force people who aren't even born to pay for our largess.