The military history of Russia has antecedents involving Kievan Rus' and the Rus' principalities that succeeded it, the Mongol invasion of the early 13th century, Russia's numerous wars against Grand Duchy of Lithuania, Crown of the Kingdom of Poland, Sweden, and Ottoman Empire, Prussia (Seven Years' War), France (especially the Napoleonic Wars and the Crimean War). The 20th century saw Russia's involvement in two world wars, as well as smaller military conflicts. During the Cold War, the greatly enlarged armed forces suppressed rebellions in Eastern Europe and became a nuclear superpower hostile to NATO, as well as China after 1960. The post-Cold War military history of the Russian Federation began in 1991. The military history of Russia includes: