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The union of Russia and Belarus , a supranational confederation , was established in a 1996 – 99 series of treaties that called for monetary union , equal rights , single citizenship , and a common foreign and defense policy .
 Russia, Belarus
Please list all entity words in the text that fit the category. Output format is "word1, word2". 
Option: location, person, organization 
Text: {0} 
Answer:
 Russia, Belarus