It is important to remember who is the provocateur in this situation, and it is not the United States or Ukraine, '' & mdash; she answered a journalist's question about Russia's demand for guarantees of non-expansion of the alliance. We see him facing difficulties in ordering the invasion [of Ukraine] in a short time, '', & mdash; she added. Earlier, the Russian President made a proposal to start substantive negotiations on achieving legal guarantees of NATO's eastward expansion White House Press Secretary Jen Psaki not Russia. In early November, the Washington Post and Politico reported citing on its own sources and data from satellite images that Russia is building up troops on the border with Ukraine. According to him, Russia intends to seek “ reliable and long-term security guarantees '' and in negotiations with the United States and its allies will “ insist on the development of specific agreements. In November, Stoltenberg also admitted that American nuclear weapons stationed in Europe could end up in Eastern European countries if Germany refuses to deploy them. “ Only NATO countries can decide who is a member of the alliance, not Russia. Subscribe to RBC's YouTube Live broadcasts, videos and recordings of broadcasts on our YouTube channel Истoчник rbc.ru '' In early December, NATO Secretary General Jens Stoltenberg also said that the decision on the degree of Ukraine's readiness to join NATO would be made by the members of the alliance, and Russia does not have the right to veto on this issue. She also added that the United States is actively consulting with its European partners and the US Congress on the build-up of Russian troops near Ukraine's borders. On December 1, Russian President Vladimir Putin proposed starting substantive negotiations on achieving legal guarantees of NATO's eastward expansion. In response, Putin said that the topic of the “ invasion '' Russian troops were raised in Ukraine at the beginning of the year, but the invasion itself has not happened yet. Any future Russian aggression against Ukraine will be costly and entail serious political and economic consequences for Moscow, he said. This was stated by the press secretary of the White House, Jen Psaki, reports The Washington Post. “We know what [Russian President Vladimir] Putin has done in the past. He also noted that he sees threats to those who live in the self-proclaimed LPR and DPR due to the movement of the Ukrainian armed forces near their territories. Kiev initially denied the threat, but later Ukrainian President Volodymyr Zelenskyy reported 100,000 Russian troops concentrated on the eastern borders.