If Russia were to use nuclear weapons, experts saw a range of possibilities, from a detonation over the Black Sea or an uninhabited part of Ukraine to demonstrate its capabilities to a strike against a Ukrainian military target or on a city.
Russian Foreign Minister Sergei Lavrov said: "NATO, in essence, is engaged in a war with Russia through a proxy and is arming that proxy. War means war.”
The following is the Congressional Research Service April 21, 2022 report Russia’s Nuclear Weapons: Doctrine, Forces, and Modernization. From the report Russia’s nuclear forces consist of both long-range, strategic systems including intercontinental ballistic missiles (ICBMs), submarine-launched ballistic missiles (SLBMs), and heavy bombers and shorter- and medium-range delivery systems. Russia is modernizing its nuclear forces, replacing Soviet-era systems […]