I don't buy it in the case of Putin, but in another forum, not FR but this guy was discussing the war in Vietnam and the South Vietnamese regime accused of doing some bad things. It was said that in some of these cases, the value system is just different. Sure, to us Westerners, some of these things look very bad but the situation, "situational ethics" is different.
I'm sure, if one wanted to clean up Mexico, some of what you'd have to do wouldn't be pretty.