The Cold War.
Pein's fullname is never revealed. Pein is really Nagato, and just an alias that was created.
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Galilio Galilao
Christo Vladimirov Javacheff
Pyotr Ilyich Tchaikovsky
delhi land and finance
Vazir Sultan Tobbaco
Central Processing Unit
Siva Kaneswaren
Kitty White
Missouri Service Center