A few weeks back i described what Russia would do would be like a Python - they've done it everywhere else. They will probe and try and find a weak spot and when they do they will capitalise and patiently squeeze, i think that is their focus now in the east and south.
At this point, they've realised that sieging the likes of of Kyiv is to labour intensive and it suits the Ukrainian military. So the next phase of the war will be securing the land border between Ukraine and Russia and creating the land border all the way from Russia to Crimea through the offensive in Donbass and along the sea of Azov and the Black Sea - which will be a huge strategic objective for them in this campaign given the influence of the black sea in the region . This will allow Russia to better supply their army, refresh troops by having a staging post in the country along their own border. It also brings into play their air force - something we haven't strategically seen significantly yet, but i think we will in the east - its why Ukraine have been crying out for anti aircraft weapons and systems. I think we will see a different war now, it will be different from besieging cities. Russia look to be picking battles in regions that will contest areas through open field warfare, this will suit Russia far more then Ukraine, its why people are describing it like WW2 as such open battles probably haven't been seen since then - tanks will come more into play.
If Donbas and the southern coast falls, i think we are at a tipping point then, Putin might decide to continue. he might decide that the mission was successful and be happy with the Donbas and Sothern Ukraine and like Crimea - i think the west would concede that - maybe not Ukraine. It may stay like that for years like Crimea until he picks a time to attack again. Or he may sit in Crimea, Donbass and Southern Ukraine for months, regroup and go again. No end in sight to this unfortunately and things took a turn yesterday i think for the worst over the next few weeks/months, Putin needs to show progress before the 9th of May. Russia are in absolutely no hurry to my mind and will play the long game willingly if things haven't gone their expected way so far. All eyes now turn to the east and south.