US Undermines Safety of Russian Cosmonaut's Work at ISS by Denying Visa, Roscosmos Says

MOSCOW (Sputnik) - Refusal of the United States to issue an entry visa for Russian cosmonaut Nikolay Chub, who was to undergo training at the NASA space center, threatens his safety during his stay at the International Space Station (ISS), as well as the safety of his US colleagues, Russia's State Space Corporation Roscosmos said on Saturday.