During the war, be it the World War I or World War II, there was very little resistance among the German people about waging war. This might have came as a surprise for the other countries, and they also thought that the Germans are all hardline nationalist, but that was not the prime reason. The Germans were living in terrible conditions. The was lot of poverty, the job opportunities were not the best, the economy in terrible condition, and socially the country was in a dire situation. The German politicians used this desperation of the people, so they easily managed to convince them that the war would solve their problems. The people didn't had much to lose, so they went into war without thinking a lot, and seeing their economy and country becoming stronger, it seemed justifiable.
Http://www.dvusd.org/cms/lib011/AZ01901092/Centricity/Domain/4920/Washingtons%20farewell%20address.pdf
Read paragraph 3 .. its all of that
Answers to #1:
Raphael Lemkin's definition of genocide was not accepted until after the Holocaust.
Raphael Lemkin had been studying the problem of mass killings of a people group since the 1920s, in regard to Turkish slaughter of Armenians in 1915. He coined the term "genocide" in 1944, in reference then also to the Holocaust. The term uses Greek language roots and means "killing of a race" of people. Lemkin served as an advisor to Justice Robert Jackson, the lead prosecutor at the Nuremberg trials. "Crimes against humanity" was the charge used at the Nuremberg trials, since no international legal definition of "genocide" had yet been accepted. Ultimately, Lemkin was able to persuade the United Nations to accept the definition of genocide and codify it into international law. In December, 1948, the United Nations adopted the Convention on the Prevention and Punishment of the Crime of Genocide, which made use of a number of Lemkin's ideas on the subject.
#2: For item #2, you didn't ask a question, so I won't attempt to guess at what question you might have in mind. The definition as you quote it comes from Article II of the UN's Genocide Convention. Article III also indicts intention and conspiracy to commit genocide as crimes against international law. Article IV of that same Convention then puts teeth into the UN's action, saying, "Persons committing genocide or any of the other acts enumerated in article III shall be punished, whether they are constitutionally responsible rulers, public officials or private individuals."
There were many reasons for Hitler to not attack
Switzerland, as the country did not have any natural resources which could have
attracted Hitler. Another simple reason is that Hitler never felt the need to
invade Switzerland as the whole point of attack could be to utilize the train
lines, supply lines and other facilities to ease up the transportation of
German army with which Switzerland never messed even during the war, German
armies were passing through Switzerland freely, the famous stories are common about
sealed rail cars passing through Italy to Germany. Switzerland played an almost
neutral role during war which could also be a reason for their safe grounds.
Though
Hitler had a plan to attack Switzerland called “Operation Tannenbaum”, which
was cancelled later.
the answer is a for this question