On April 3, the director of the Russian space agency said on Saturday that he would stop cooperation with other countries on the international space station until the sanctions against the country were lifted < p > Dmitry Rogozin, director of the Russian space agency, tweeted that the "partnership" with Russia on the international space station and other projects can be restored only when other countries "completely and unconditionally lift illegal sanctions" < p > in his tweet, Rogozin said that he had sent letters to NASA, ESA and CSA calling for the lifting of sanctions. He also released pictures of each country's response. CSA has confirmed the authenticity of the matter, but declined to comment further. NASA and ESA haven't responded yet < p > however, it seems that the letter signed by NASA Director Bill Nelson wrote: "the United States will continue to support cooperation among countries in the space field, especially activities related to the operation of the international space station by Russia, Canada, Europe and Japan. New and existing U.S. export control measures continue to allow cooperation between the United States and Russia to ensure the safe operation of the international space station." CSA also said: "I can assure you that Canada will continue to support the international space station project and is committed to its safe and successful operation." Meanwhile, ESA director Josef aschbacher said he would convey Rogozin's request to ESA member states for evaluation < p > Rogozin said in his tweet: "the position of our partners is very clear: sanctions will not be lifted. The purpose of sanctions is to strangle the Russian economy, plunge our people into despair and hunger, and make our country yield." He added that the Russian space agency would soon determine when to stop Russia's participation in the international space station project, and then submit a report to the Russian government < p > Rogozin had previously said that sanctions might undermine the partnership between the United States and Russia on the international space station. He reacted strongly to the sanctions imposed by US President Joe Biden in February, suggesting that the space station might fall to earth without Russia's participation. In fact, Russia's withdrawal from the space station could cause serious harm, because NASA relies on Russia to maintain the position and direction of the international space station in space < p > on Thursday local time, NASA said that Russia is trying to extend its cooperation on the international space station to 2030, but Rogozin's statement makes this unlikely. Earlier this week, NASA astronaut mark Vande hei and two Russian astronauts safely returned to earth in the Russian Soyuz spacecraft. Before that, many people feared that he might be trapped on the space station, but Russia insisted that it would not leave van der Hei ESA said last month that it would suspend cooperation with the Russian space agency on the ExoMars mission to explore signs of life on the surface of Mars. Oneweb, a British satellite company, also said it had signed a contract with SpaceX to put its satellite into orbit. Earlier, due to Russia's request to "ensure the civilian use of satellites" before the launch, the company cancelled its plan to launch 36 satellites at the Baikonur launch site in Kazakhstan on March 4. (small) < / P > < p >