Ivo greatly opposed the movement of Stjepan Radić, the president of the Croatian Peasant Party, at occasions calling the people that support him as fools that follow the footsteps of a blind dog. His ambassadorship ended in 1941 after the German invasion of Yugoslavia. During World War II, Andrić lived quietly in Belgrade, completing the three of his most famous novels which were published in 1945, including The Bridge on the Drina.