Everyone is gearing up for war all over the world. They know the US is weak now with Xiden the figurehead.
The Russians are reacting to what the Ukrainian government is doing, and they are probably getting ready to defend the ethnic Russians that want their help.
The period of time after the fall of Rome wasn't called the Dark Ages for nothing. That lasted 1,000 years. The Dark Ages following the fall of the United States will be deeper, darker and last longer. A time of intellectual darkness and barbarity.