blood has been spilled. but despite russia s overwhelming firepower, they did not pass. now, pam, on sunday the mayor called locals to form a circular defense of the city and get molotov cocktails. being there, it is extraordinary to try and begin to fathom quite what the russian playbook is here, to consistently try, using heavy weapons, to burst into cities and then control them. staggering to see the resistance against them, but also, you wonder what really is the russian end game here, pam. it s such a good question. nick paton walsh, thank you. pure barbarism from the russian side. putin s mindset is a big worry among some people trying to understand his actions. this is different. and this behavior is different than in the past.