“From our analysis, it becomes clear: business retreats and sanctions are catastrophically crippling the Russian economy. We tackle a wide range of common misperceptions – and shed light on what is actually going on inside Russia, including:”  https://papers.ssrn.com/sol3/papers.cfm?abstract_id=4167193

Just adding fuel to the ongoing fire here at the tent.  I used to think that nuclear weapons would never be used, now I’m not quite so certain.  If Putin is cornered, would he use one or two or more?  The climax to this fourth turning is still in front of us, and one miscalculation on either side could result in a bright flash of light.  The three previous climaxes were: the Revolutionary War, the US Civil War and WW II.  Disclaimer: not sure anyone knows what is really going on in Ukraine or Russia.