Mikhail S. Gorbachev, whose rise to power in the Soviet Union set in motion a series of revolutionary changes that transformed the map of Europe and ended the Cold War that had threatened the world with nuclear annihilation, has died in Moscow. [A classic New York Times eulogy. VERY long, but an excellent political history of the USSR from the 1930s to the late 1990s. No NYT pay wall. MSN.com publishes all of it.]