An anonymous reader writes "The Verge reports on an internal memo from NASA indicating that they've suspended all contracts and activities with Russia that aren't involved with operating the International Space Station. Quoting: 'Given Russia's ongoing violation of Ukraine's sovereignty and territorial integrity, until further notice, the U.S. Government has determined that all NASA contacts with Russian Government representatives are suspended, unless the activity has been specifically excepted. This suspension includes NASA travel to Russia and visits by Russian Government representatives to NASA facilities, bilateral meetings, email, and teleconferences or videoconferences. At the present time, only operational International Space Station activities have been excepted.' NASA Administrator Charles Bolden argued recently that our dependence on Russia for putting astronauts into space needs to end."