G. John Ikenberry and Anne-Marie Slaughter have also called for the creation of a “Concert of Democracies” in the final report of the Princeton Project on National Security, Forging a World Under Liberty and Law: U.S. National Security in the 21st Century (September 2006).
John Ikenberry dan Anne-Marie Slaughter juga pernah mengusulkan pembentukan “Concert of Democracies” dalam laporan akhir Princeton Project berjudul National Security, Forging a World Under Liberty and Law: U.S. National Security in the 21st Century pada September 2006.