You don't do shit like this so that the enemy will accept your surrender. If they can't trust you not to attack, they'll just shoot you the moment your arms are in the air.
Lucky ukranians.
Wonder what the Russian oldiers are being told, if they're doing this sort of this. During world war 2, Japanese soldier were told that they be horrendously killed, including women and children. So many felt like the decision was between suicide and tortuous murder.