In 1989, more than a million people formed a human chain more than 373 miles (600 km) long across the three Baltic states—Estonia, Latvia, and Lithuania. Known as the “Baltic Way,” the demonstration marked the 50th anniversary of the Molotov-Ribbentrop Pact, an agreement between the Soviet Union and Germany that secretly divided Poland and gave the Soviet Union control of Latvia, Lithuania, Estonia, and Finland. When did the Soviet Union finally admit the existence of the secret protocol? Discuss