USA
The Global Go to Think Tank Index Report (GGTTI) 2015 has been topped by United States of America (USA) followed by China, UK, India and Germany. The six Indian think tanks figured in the global top 175 list viz. Centre for Civil Society (CCS), Institute For Defence Studies and Analyses (IDSA), Indian Council for Research on International Economic Relations, The Energy and Resources Institute (TERI), Observer Research Foundation (ORF) and Development Alternatives.