Could it also be that Putin is starting to become worried about a coup? Erdogan saw elements of his air force turn against him...Furthermore, the recent developments in Russia can be viewed in different ways as well. For example, installations of Pantsir’s on the roofs of MoD and other buildings (source somewhere above, provided by another member) may suggest that, as most of the media indicate, the Russians are “fearful” of a Ukraine drone attack on Moscow. Another interpretation could be that they are actually preparing for an escalation and things to come. The latter holds logic behind it, as opposed to the former, in my opinion. Gerasimov becoming in charge of the war in Ukraine may suggest the same as he commands the Russian Armed Forces in their entirety and the chain of command beyond is very short and consists of two links. He is also, I believe, one of the three people with access to the “cheget”.
As for Gerasimov, perhaps that's just Putin doing is usual reordering of people when his "plans" don't work out as he expected?
Perhaps but I am not so sure. Ukraine already launched attacks against Crimea. Instead of Russians rushing to Crimea "defend" it I seem to remember long lines of cars leaving Crimea, heading for Russia...Frankly, the plan of attacking Crimea to bring Russia to the negotiating table is idiotic and will bring about a pretty strong response, again, in my humble opinion. Anyone and everyone may think of Crimea what they like, but that boat had sailed back in 2014 and it ain’t coming back. There aren’t many Russians that think this should be contested, even remotely so (@Feanor may chime in with better insight on this perhaps?) Germany has things to worry about with the decisions they are making.
Also, after the actions taken by Russia since February 24 2022, I would support the view that if Ukraine prefers, they should be given the opportunity to take back all they lost in 2014.