The Russian effort to invade Ukraine appears to have been underfunded and under-equipped to handle the swift takeover that Russian President Vladimir Putin was hoping for.
Russia is "increasingly frustrated" by the lack of momentum in the invasion, particularly in the north of the country, a U.S. official said Saturday. Despite the months of planning and preparation, Russia has yet to achieve air superiority, and Ukraine retains command and control.
https://www.foxnews.com/world/ukraine-russian-troops-underfunded-equipment-subpar