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It could be a sobering experience for the Kremlin security chief who , just two months after being appointed by the president and two heady weeks after taking charge of the Chechen crisis , had promised to wrap up the 20-month war by the weekend .
 Kremlin, Chechen
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:
 Kremlin, Chechen