@Walter Hinteler,
According to ehbeth's graph, 67% of the German people approve of NATO so your nation has a problem. Overwhelmingly the people want to see NATO continue, and almost as overwhelmingly they don't want to meet the spending level their currently elected leader committed them to.
Not only has Germany not met the 2.0% commitment it hasn't even reached the 1.5% the people say they will tolerate. (Currently 1.2%)
Does this mean that Angela Merkel's word is no value because a) She doesn't have the political power to make foreign policy commitments for Germany or b) She's deceitful; saying one thing and doing something else?