Originally posted by the Voice of America. Voice of America content is produced by the Voice of America, a United States federal government-sponsored entity, and is in the public domain. Russian Court Orders Putin Critic Navalny Held for 30 Days Charles Maynes MOSCOW - A Russian court on Monday sentenced opposition leader Alexei Navalny to 30 days in a Moscow prison over parole violations, setting the stage for a later trial that could send the Kremlin's most vocal critic to prison for several years. The court ruling came less than a day after Navalny was detained upon arrival of his flight from Germany to a Moscow airport, ending a lengthy recuperation abroad after a poisoning attack in Siberia last August. Navalny insists Russia's security services, with backing from longtime President Vladimir Putin, were behind the assassination attempt that involved the use of a strain of the Soviet-era military nerve agent Novichok. Independent media investigations have detailed extensive state surveillance of Navalny in the days and weeks leading up to the attack. Putin has acknowledged his government's tracking of the opposition figurebut insisted Navalny is too politically insignificant for the state to want him dead. Pop-up justice The circumstances surrounding Tuesday's legal proceedings were highly unusual by Russian standards. .