Marshall Billingsley, special representative of the United States on arms control, said after the dialogue that although the two sides have reached agreement on some issues, they still have great differences on key issues, and there is still a lot of work to be done to make progress in the talks. He said through social media that there had been “substantive and serious talks” between the two sides, but now “the ball is in Russia.”. Russia’s Deputy Foreign Minister Sergei Ryabkov said after the dialogue that there was still room for maneuver in the talks. His impression was that it was still possible to extend the START treaty, but the United States was still hesitating on whether to say “yes”. The new strategic arms reduction treaty signed by the United States and Russia in 2010 will expire in 2021, which aims to limit the number of nuclear warheads and delivery vehicles deployed by the United States and Russia. After the Sino Missile Treaty of the United States and Russia expired in 2019, the new strategic arms reduction treaty has become the only arms control treaty between the two countries. Russia has repeatedly expressed its willingness to extend the validity of the treaty without preconditions, but the United States has been indifferent. In order to discuss issues related to the extension of the new START treaty, representatives of the United States and Russia began to hold arms control alignment in Vienna on June 22 this year. At the end of the month, the two countries held strategic consultations in Vienna. According to reports, the results of the dialogue and consultation were limited. In addition, according to a statement issued by the Russian Ministry of defense on the 18th, Russian Defense Minister Shoigu should make telephone calls with US Defense Secretary esper on the same day to discuss measures to enhance mutual trust and transparency between the Russian and US armed forces, and exchange views on the situation in many regions of the world.