"Please describe one communist economic law Putin has supported."
He isn't necessarily communist but he is authoritarian and is acting top effectively re-nationalize energy companies in Russia - something that Marx would approve of.
The state as of January 1st is divesting it's 36% stake in Gazprom that's hardly nationalizing energy.
(Definition) Authoritarian |???ôri?te(?)r??n; ô??är-| adjective favoring or enforcing strict obedience to authority, esp. that of the government, at the expense of personal freedom