A senior Pentagon official warns that the Russian and Chinese militaries are refocusing their efforts to counter U.S. space operations, posing an existential threat to America’s military edge.

Russia and China reorganized their forces in 2015, putting special emphasis on countering America in space, deputy assistant secretary of defense for space policy Steve Kitay said this week during a forum at the Center for Strategic and International Studies. He explained that the two U.S. adversaries have gone beyond simply improving their own operations in the space domain and have taken an offensive posture.