In a stunning turn of events, Mikhail Gorbachev, the last Soviet leader, stepped down as President of the Soviet Union, marking the end of an era. As Ukraine's referendum results were finalized, the country officially declared its independence, dealing a final blow to the crumbling Soviet empire. With Gorbachev's resignation, the Soviet Union was formally dissolved the very next day, bringing an end to the Cold War and a tumultuous chapter in world history.