Germany may very well develop nuclear weapons. It has voluntarily joined the NPT, but it can leave that treaty within a year. Also, why should Russia, France, Britain or America enforce the special article of the 2+4-treaty, saying that Germany will not develop NBC-weapons? Do you really think that anyone of these four countries would have objections against a nuclear-armed Germany?
Treaty on the Final Settlement with Respect to Germany
September 12, 1990ARTICLE 3
(1) The Governments of the Federal Republic of Germany and the German Democratic Republic reaffirm their renunciation of the manufacture and possession of and control over nuclear, biological and chemical weapons. They declare that the united Germany, too, will abide by these commitments. In particular, rights and obligations arising from the Treaty on the Non-Proliferation of Nuclear Weapons of 1 July 1968 will continue to apply to the united Germany.
It's seems to me that there's an obvious and probably intentional loophole, since the NPT did continue to apply after the reunification of Germany, but the Final Settlement doesn't say it will continue to apply forever.
Don't forget Japan.
And I have absolutely nothing against it. I'm preety sure Germany is the last country to use it as an offensive weapon.
It's logical, that well armed ally is better than an ally with bows and arrows ;)
"Do you really think that anyone of these four countries would have objections against a nuclear-armed Germany?"
Russia and Britain could probably name a few.