This fission stage made fusion weapons considerably more dirty than they were made out to be. This was evident in the towering cloud of deadly fallout that followed the "Bravo" test. When the Soviet Union tested its first megaton device in 1955, the possibility of a "limited" nuclear war seemed even more remote in the public and political mind. Even cities and countries that were not direct targets would suffer fallout contamination. Extremely harmful fission products would disperse via normal weather patterns and embed in soil and water around the planet.