Is it because they're hard to take out or is it a strategic decision? I was initially thinking it must be a voluntary omission, some kind of psyop to get Ukrainians a false sense of security/superiority before Russia shows their actual hand. But as this goes on and it seems Russia's military is not as strong or tactical as expected* the more I just find it puzzling.
*A sentiment I get namely due to info from the thread below, my TLDR being Russia's army is green or only faced weak opposition, not intrinsically motivated and used to doing special ops not wars while Ukrainian's army is battle hardened (6x 60k served in Donbass) and defending their homes. To be noted, if true it doesn't make the situation less volatile - a losing and cornered paper tiger with access thermobaric weapons or tactical nukes seems most dangerous to me. Or not, but if it is I'm getting nervous we (West/NATO) removed them the option to retreat by obliterating their financial system.
0: https://twitter.com/kamilkazani/status/1497993363076915204