Answer:
An arms race occurs when two or more countries increase the size and quality of military resources to gain military and political superiority over one another. The Cold War between the United States and the Soviet Union is perhaps the largest and most expensive arms race in history; however, others have occurred, often with dire consequences. Whether an arms race increases or decreases the risk of war remains debatable: some analysts agree with Sir Edward Grey, Britain's foreign secretary at the start of World War I, who stated "The moral is obvious; it is that great armaments lead inevitably to war."
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