The Henry Stimson Center, a nonpartisan think tank that follows the space-weaponry issue, said the policy changes will reinforce international suspicions that the United States may seek to develop, test and deploy space weapons. The concerns are amplified, he said, by the administration's refusal to enter negotiations or even less formal discussions on the subject. Additionally, Joan Johnson-Freese of the Naval War College has argued recently in 2007 that while vague in many aspects, the new Bush Space Policy in 2006 read in the past historical context of the last few years can be seen to promote more of a militarization of space. Johnson-Freese, as recently as January 2008 in a workshop sponsored by the Space Studies Board of the National Research Council, has promoted a global leadership role for NASA because of its vast resources and has indicated that the free passing of spacecraft under the Bush policy should fall under a legal realm rather than leave it to U.S to enforce what it believes is a violation of its use of space.