https://www.yahoo.com/news/ukraines-coun...02776.html
Somewhat interesting article on the offensive. There are a lot of pieces of information in this article, but after reading it I was left with the feeling the "answers" are elusive. To me, it is inconceivable that the Ukrainians (in particular) and NATO (in general) was unaware of the extent of Russian defenses. That aspect of the explanation just doesn't hold water.
It seems that the Ukrainian counteroffensive was somewhat similar in nature to the Dyle Plan in WW II. Nobody in the military really thought it would work, but "what else is there?". Ukraine was indeed fighting using troops that were inadequately trained. Everybody knew that. They were fighting without air superiority. Everybody knew that. They were fighting on many fronts and therefore were not free to move troops around at will. Everybody knew that. These facts made the offensive difficult to execute. Ukraine did make lots of progress in the face of these problems, any one of which could derail the offensive. There were other problems however that may be even more serious.
Ukraine was operating in a politically difficult environment. There people of Ukraine wanted to drive the Russians out. NATO was pushing Ukraine to conduct an offensive while at the same time pointing out the deficiencies of it's troops and capabilities. NATO also was unable/unwilling to provide adequate forces (particularly mine breaching equipment and air power) to overcome Russian defenses "on the bounce". A lot of that problem is caused by the fact that essentially all NATO commanders are 1) not experienced in fighting near-peer competitors (or even well organized, disciplined, military of any kind), and 2) owe their positions to their "military political" abilities, not their ability to lead troops, plan battles and execute logistics. Part of this is the inevitable consequences of a long period (30 years or so) of relative "peace" in Europe. This is exacerbated by the internal political situation in most of the EU, where nobody wants to spend money on defense. To do so is inconvenient and not popular. Therefore, for many years the political parties all said it was unnecessary. Generals who disagreed lost their jobs.
The situation in the US was somewhat different, as "defense" was still given lip service. We had to fight "ISIS", so we re-directed our military to do that, not to fight any real nation-state. It was almost amusing to watch the Navy contort itself to be "relevant" to the "war on terror". The "blueberries" certainly helped camouflage the ships crew. This resulted in lots of officers that were worried about what were arguably the wrong things. The LCS is a great example of a bad idea made worse by tinkering, trying to be all things to all men, and requirements defined without a real military purpose behind them. The fact is that the Navy could do some things in the war on terror that were critical. Naval air was needed in many cases because there were no land-based locations available. However, most of what the Navy does and should do is not relevant to fighting terrorists. To protect their budget, they needed to pretend otherwise, so they did. IMO the results of the "Charm School" for general officers count for more than whatever the officers accomplished in their former career or their military educational performance. It is all about "politics" of various kinds. This situation resulted in "the west" giving Ukraine a lot of "advice" that caused the Ukrainians to just roll their eyes.
The west completely failed to understand what Ukraine was up against. Our wonderful "intelligence system" undoubtedly produced the data that clearly showed the problems. However, we didn't prioritize getting mine-breaching systems into Ukraine. This is partly caused by the fact we ourselves have inadequate mine warfare assets, both offensive and defensive. If we were going to send Ukraine forward using "NATO tactics" we owed them our best efforts. They didn't get that. We also knew Ukraine didn't have anywhere near the air assets to execute "NATO style" tactics. The US has never fought without the AO, but we expected Ukraine to do so. To be fair, Ukraine may have underestimated how important air superiority (at least locally) would be. However, their former military doctrine (Russian derived) accepted the fact that was OK. They didn't know better perhaps. NATO absolutely should have. The subsequent F-16 fiasco occurred because Ukraine finally realized that their offensives couldn't work without it. Duh. Well, better late than never.
Ukraine can get F-16s and begin offensives "later". The "bulge" toward the M-14 and Melitopol', purchased with so much blood, is still very valuable and can be exploited. However the "failure" of the Ukrainian offensive is causing some internal political and strategic problems in Ukraine. How serious these problems are is not yet clear, but they could be a game-changer. Zelenskyy has exhibited great leadership and has enjoyed relative political immunity. That is no longer true. He is in a bit of conflict with his military, which could be very serious. Ukraine needs to regenerate it's manpower, and that also is contentious. Zelenskyy is also trying to root out corruption in his country, which would be difficult in the best of times. He needs to do this to join the EU. However, it makes him lots of enemies in a country that has always has corruption issues. On top of all this, Ukraine's economy is in horrible shape and the Russians are firing missiles into the cities every night. Hard to be politically popular under these conditions. Bottom line, Zelenskyy is viewed in his country as "responsible" for the "failed" offensive. No way around that.
The simple fact is the west has to "do better". Zelenskyy and Ukraine need some "good news" soon that is real. This is no time for debate. That time was back when we decided to help Ukraine. We need them to "win", and need to help make that happen ASAP. The war is not "lost". Ukraine has actually done very well given the hand they were dealt. One more year of war is probably all they are physically capable of. After that, I see no way Ukraine will hold together.
OTOH, Ukraine has overcome large pieces of the Surovikin line. With adequate air power, they can definitely make things difficult for Russia. The incursions on the left bank of the Dnipro are increasing the pressure and causing the Russians to commit manpower in that area they dearly do not want to. It may be Ukraine intends to let Russia make the "first move" and will remain on the defensive in the spring in order to give the F-16 training as much time as possible. That may be fine. This is especially true if it is accompanied with continued operations in Crimea. However, by summer Ukraine must be ready to go.