The reality is we don’t really know what is going on. We have to trust the biased news sources and Russia and Ukraine. None of which can be reliable. That hospital could have been a military institution, we just don’t know.
Next there is nothing stopping Putin from using nuclear options. If he wants to use them he will while everyone just stands to the side in fear of escalation. How is providing migs an escalation but javelins and ammo not?

It will be years before we can see through all the political spin from every side.