MOSCOW — Prime Minister Dmitry Medvedev on Friday defended the enactment of new laws that rolled back his own liberal agenda as Russia’s previous president, a tacit admission of how little influence he has now that Vladimir Putin is back in the Kremlin.

In an interview with reporters from five Russian television stations, Medvedev said he was ‘‘basically happy with how my life has gone’’ during the past year, despite seeing the Kremlin abandon his conciliatory, modernization-focused platform in favor of a crackdown on dissent.