I am surprised to say the least at your mind reading ability GJC, especially if you are an educated Catholic. Unlike you, I dare not make any claim to KNOW what the state of Vladimir Putin's soul is in, nor any other person's soul on this Earth is in other than my very own.
I'd be interested to know if you can state on this forum any SSPX priest or SSPX bishop or any resistance priest or bishop who would openly declare to the whole world like yourself that Vladimir Putin's soul is presently in the state of mortal sin. The Church informs us that we are not even supposed to go around stating someone, other than perhaps Judas and, of course, the fallen angels, are in hell. (The children of Fatima, for example, saw many souls falling into hell, but even if they identified any of them which I doubt they did, they certainly would not be free to pass that information on to us.)
As far as I can ascertain Putin received a valid baptism, one recognized for its validity by the Roman Catholic Church. As I think we all know, sanctifying grace is gained by baptism and only lost by mortal sin.
There are 3 things, of course, which are necessary to make a sin mortal. First, the matter must be grave, something very important. (Being a schismatic fills the bill!) Second, the individual must be mindful of the serious wrong. That is to say, he must have full knowledge and reflection or attention, and know that what he does is seriously wrong. Third, the individual must fully consent to it. As one can readily see, two of the necessary elements for a sin to be mortal have to do with a person's state of mind. I would submit that there is absolutely no way short of some divine revelation given directly to us from God or via another with God's permission that we can KNOW that Vladimir Putin's soul is in the state of mortal sin. For goodness sake, even angels can't read a person's mind unless God were to allow them to! (Has God allowed you to read Mr. Putin's mind, to scan as it were his interior forum?) And if you do not know the interior state of Mr. Putin's mind then you are not in any position to declare/judge him to be in the state of mortal sin.
Matthew 7: 1-3 "Judge not, that you may not be judged, For with what judgment you judge, you shall be judged: and with what measure you mete, it shall be measured to you again. And why seest thou the mote that is in thy brother's eye; and seest not the beam that is in thy own eye?" We are simply not free to pass judgment on another person's interior forum, his subjective state of mind and thus we are not free to simply go around declaring whether someone is in the state of mortal sin or not.