Sonne strikes me as incredibly naive. There is nothing positive that German troops can contribute in Lebanon that would not be spun against them by the world press. While it might be the right thing to do, they would be better off continuing to use their military resources in Afghanistan and in training Iraqi police where the needs are more critical and potentially more rewarding.
Deployment to Lebanon would also not be good for the German national psychic. One only has to look at their heroic successes in Kosovo that were downplayed by the media or the world condemnation of their efforts to rein in Scientology abuses. It led German prosecutors to take less aggressive stands against al-Qaida agents operating in Germany before 9/11.
Germans are still far too sensitive to criticism for this mission. They still need time to mature as a democracy with a foreign policy that allows a "normal" pursuit of key national interests.
I completely disagree with your post. While I find the hint on the Holocaust rather ridiculous, I think that a participation in the Lebanon mission is our obligation as Israel´s best friend in Europe.
Also, I don´t see how the US (not world) condemnation of our fight against Scientology or the Kosovo mission is related to this current affair.