To be fair, I do not think Russia has anything to do with the current Mideast turmoil. That seems to largely be an Iran sponsored problem that came to a head possibly because one of its proxies did something that Iran would not have condoned, and politics has trapped all sides into their various reactions.
As for Russian nuclear weapons usage, if it has not been a problem yet after Kharkiv and Kherson I can not imagine it will be in the future either now that the line of control has stabilized and there is little possibility of Ukraine (or Russia) significantly altering it.
Were Russia and the US to get into a tactical nuclear exchange, I find it extremely doubtful that it would remain strictly "tactical" for long. Having more tactical nuclear weapons strikes me as the equivalent of bringing a thousand rounds of pistol ammo to a rifle range - sure, go ahead, but I think after you fire the first couple dozen it is going to be pointless.
As for Russian nuclear weapons usage, if it has not been a problem yet after Kharkiv and Kherson I can not imagine it will be in the future either now that the line of control has stabilized and there is little possibility of Ukraine (or Russia) significantly altering it.
Were Russia and the US to get into a tactical nuclear exchange, I find it extremely doubtful that it would remain strictly "tactical" for long. Having more tactical nuclear weapons strikes me as the equivalent of bringing a thousand rounds of pistol ammo to a rifle range - sure, go ahead, but I think after you fire the first couple dozen it is going to be pointless.