“With regards to GPS, Deputy PM Dimitry Rogozin says that he’ll shut down Russian base stations that keep the system going, unless the US promises to house reciprocal stations to support the competing GLONASS platform. He’s quoted as saying that Russia is wary about developing future ‘high-tech projects with such an unreliable partner as the United States, which politicizes everything.’ “
Source:Russia threatens to disrupt GPS navigation in tantrum over sanctions