Above, the International Space Station. NASA | Getty ImagesWASHINGTON — Russia's space chief threatened Monday to withdraw from the International Space Station program if U.S. sanctions against Moscow's space entities are "not lifted in the near future." "Either we work together, in which case the sanctions are lifted immediately, or we will not work together and we will deploy our own station," he added. In December, the Trump administration labeled Russia's JSC Rocket and Space Center Progress and JSC Central Research Institute of Machine Building, also known as TsNIIMash, as companies with alleged ties to the Russian military. The designation requires U.S. companies to obtain licenses before selling to these foreign firms.