What would happen if tensions between the US and Russia over Ukraine reaches a boiling point? No, there won’t be a nuclear war; both countries have much sensible leaderships to prevent such a rash action. But even sensible leaderships cannot guarantee the safe return of US astronauts. Yup, those guys floating around in space wearing their alien-esque dresses! Since Russia now has full control over the transportation of astronauts, Moscow may refuse to bring back the American space travellers. What now?