[But they promised not to attack us! Treaty of Tilsit 1807. Molotov–Ribbentrop Pact 1939.]

Moscow wanted to state inadmissibility of any war with US, Russian delegation says

The Russian delegation hoped that “the United States does not intend to engage in a conflict with Russia using conventional weapons”

Russia intended to declare [the] inadmissibility of any war with the US, not just a nuclear one, in a statement following the Putin-Biden summit in Geneva. This position was expressed by the Russian side at a meeting of the Shanghai Cooperation Organization (SCO) Council of Foreign Ministers in Dushanbe on Wednesday, according to sources in the Russian delegation.

[T]he Russian delegation said that Moscow wanted “to state the inadmissibility of any war with the US, not only a nuclear one, considering the risks of it descending into a nuclear conflict between Russia and the US,” but the parties “so far agreed that it is precisely a nuclear war that was inadmissible.”