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His earlier research fellowships have been at the Center for Political Studies , Institute of Social Research , University of Michigan Ann Arbor Visiting Fellow , The Henry Stimson Center , Washington DC USA , where he worked on “ The Draft Indian Nuclear Doctrine : Perspectives of Regional & Global Nuclear Powers ” May – August 2001 ; In this stint he also worked on “ Indian Security Perspectives of the PLA Navy in South Asia ” for the Center for Naval Analysis , Alexandria Virginia USA . .
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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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