Germany Must Perish! is a book that was written by a man named Theodore Kaufman in 1941. The book's main idea was that Germany, a country in Europe, was responsible for causing World War II and needed to be completely destroyed so it could never start another war again.
Kaufman proposed a plan called "territorial amputation," which meant taking away all of Germany's land, splitting it up into smaller countries, and forcing German people to move out. His idea was that this would ensure Germany could never become a strong or powerful country again.
However, it is important to note that Kaufman's ideas were extreme and not widely accepted. Many people, including leaders and citizens of other countries, believed that punishing all Germans for the actions of a few was unfair and wrong.
In the end, Germany was defeated in World War II and went through a period of rebuilding and reconciliation with other countries. Today, Germany is a strong democracy and a leader in Europe, showing that extreme ideas like Kaufman's are not necessary for peace and cooperation among nations.