Some time ago Lada Ray made an excellent audio report on the reason of the slow flow of the military operation:
And a couple of days ago I saw that Russel Bentley posted a series of posts on his Telegram channel that explain well the reason for the slow progress of the Special Military Operation in Ukraine (and also why it is a SMO, and not a War). By the looks of it, the English text is a translation from Russian. I am reposting the text here in full and unaltered.
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Why so slow?
The liberation of Donbass is not going as fast as we would like. And probably it seems especially slow to those who are waiting for it the most. Unbearably slow.
One of the reasons for the low speed of advance is the numerical superiority of the enemy and the well-fortified positions of the Armed Forces of Ukraine, which were built over 8 years.