The last two bullets from the article suggest that Putin still has some higher tier forces and weapons not in play for whatever reason. Russian forces continue

The last two bullets from the article suggest that Putin still has some higher tier forces and weapons not in play for whatever reason. Russian forces continue to refrain from using their likely full spectrum of air and missile capabilities. The Ukrainian air force also remains active. Russian operations will likely steadily wear down Ukrainian air capabilities as well eventually taking the Ukrainian air force out of the fight. Russia has sufficient conventional military power to reinforce each of its current axes of advance and overpower conventional Ukrainian forces defending them. It's too soon to call it, Ukraine obviously has most of the western world behind it, and Russia is still holding back its higher tier forces. An occupation and insurgency/counter-insurgency would be a disaster for both countries. Hopefully Putin realizes the juice is not worth the squeeze quickly and pulls back.