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The deal is a humanitarian exception to the U.N. sanctions imposed on Iraq for invading Kuwait in 1990 which include a ban on its oil exports .
 Iraq, Kuwait, U.N.
Please list all entity words in the text that fit the category. Output format is "word1, word2". 
Option: location, else, organization, person 
Text: {0} 
Answer:
 Iraq, Kuwait, U.N.