The US now seems to support unilateralism in space.
Beginning next year, NRO will be in charge of the new Offensive Counter-Space program, which will come up with plans to specifically deny the use of near-Earth space to other nations, said Teets.
This transformational use of space resources may play well to a majority of the American people, who show signs of favoring unilateralism since the end of the Iraq War, but it is causing upper-echelon defections. Several analysts at the Naval War College and Air Force Academy published essays in the months leading up to the Iraq assault, warning against assuming that the United States can maintain sole dominance of space. And in March, retired Brig. Gen. Owen Lentz, former director of intelligence for Space Command, publicly voiced his opposition to using space intelligence assets for first-strike warfare. Just because the strategy worked in Iraq, Lentz warned, "does not mean that it should become a pattern for future action against others."
I support unilateralism when there is a perceived direct threat, but I think in this case we should work with (at a minimum) our closest allies.