Except for the tiny fact that you attack Germany, you attack EU. And that's pretty much a world war right there. Nobody wants another world war, don't be silly.
M.A.D. still exists by the way. It's still why all major nations are at peace and why the EU gave so much flak to the US a few years ago when Bush wanted to install a nuclear shield. He later had to back down or serious stuff would've happened. (afaik)
Also, according to wikipedia, Europe has 150 to 240 nuclear warheads. Plenty enough to destroy all US major cities.
Oh no! The EU! A political body which requires unanimity to make any decision! We tremble in fear...
In all seriousness though, the EU does not currently extend to defense; it is currently only a political and economic union. France and Germany have proposed extending the EU to include common defense, but as of today it had not yet been ratified by either the European Council or the member states. See, e.g., the Treaty of Lisbon. (Note that the Treaty of Lisbon technically removes the unanimity requirement in place of a "double majority" threshold (meaning >55% of vote from >65% of countries) beginning in 2014.)
good news, because there has been military help treaties between neighboring countries a long time before EU was really standing up.
Fun factoid: France lets Switzerland use part of its territory to defend Geneva. And also let it fly its plane over FR territory because CH is so small that it's not practical for pilots training.
M.A.D. still exists by the way. It's still why all major nations are at peace and why the EU gave so much flak to the US a few years ago when Bush wanted to install a nuclear shield. He later had to back down or serious stuff would've happened. (afaik)
Also, according to wikipedia, Europe has 150 to 240 nuclear warheads. Plenty enough to destroy all US major cities.