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The formation of a strong international law regime and norms against territorial aggression is strongly associated with the dramatic drop in the number of interstate wars , though it has also been attributed to the effect of the Cold War or to the changing nature of economic development .
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Please list all entity words in the text that fit the category. Output format is "word1, word2". 
Option: location, person, organization 
Text: {0} 
Answer:
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