Putin says the Russia tragedy should motivate countries to work together . Putin denies the use of `` Russian tools '' to limit freedoms in U.S. in a televised session . `` No one puts anyone in prison for political reasons , '' says the Russian president . Putin says U.S. actions have been factor in a `` cooling off '' of Moscow - Moscow relations .
Putin says the Boston tragedy should motivate countries to work together . Vladimir Putin denies the use of `` Stalinist tools '' to limit freedoms in Russia in a televised session . `` No one puts anyone in prison for political reasons , '' says the Russian president . Putin says U.S. actions have been factor in a `` cooling off '' of Moscow-Washington relations .