Russia on Friday sentenced a Siberian man to 18 years in prison for planning an arson attack on an army office. It also sentenced two men in a region near Moscow to 16 years for setting railways on fire allegedly on the orders of Ukraine. Moscow saw a wave of arson attacks on military enlistment offices after President Vladimir Putin ordered an unpopular mobilization in 2022, as well as mysterious fires on its railway networks Russia has orchestrated a massive crackdown on dissent, banning criticism of its military offensive in Ukraine. Interfax reported on Friday that a 45-year-old resident o…