In Moscow...one day after more than 450 were arrested during violent protests by some of the estimated 20,000...Vladimir Putin was sworn-in...to begin an unprecedented and controversial third term.
Putin's rarely seen wife Lyudmila was present...as was Italy's controversial ex-PM Silvio Berlusconi.
Another 120 were detained...but far away from the tightly controlled inaugural ceremony.
TO SEE: 10 INAUGURAL FOTOS:
Several prominent activists remained in jail after Sunday's clash with police.
At least 80 protesters...and 12 police were injured in what some called the most violent clash since 1999.
TO WATCH: 1:20 REPORT:
ALSO... TO READ : On his last day as president, Dmitry Medvedev fired Navy Chief Admiral Vladimir Vysotsky, who's command was plagued by 2 deadly nuclear submarine accidents.