|
James A. Baker III Institute for Public Policy (United States)
49
|
RAND Corporation (United States)
7
|
American Enterprise Institute (United States)
6
|
|
International Institute for Applied Systems Analysis (Austria)
5
|
Brookings Institution (United States)
3
|
Chatham House (United Kingdom)
2
|
|
Center for American Progress (United States)
1
|
Center for Development Research (Germany)
1
|
Centro Euro-Mediterraneo sui Cambiamenti Climatici (Italy)
1
|
|
Energy Studies Institute (Singapore)
1
|
