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The clashes , shattering a ceasefire negotiated last year by Washington , had threatened a U.S.-led peace plan to unite the Kurdish region against Iraqi President Saddam Hussein .
 Iraqi, Saddam Hussein, Kurdish, Washington, U.S.-led
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:
 Iraqi, Saddam Hussein, Kurdish, Washington, U.S.-led