A Russian court has ordered that the trial for Alexei Navalny be held behind closed doors as the Kremlin critic faces extremism charges that could mean his prison time is extended for decades. The case comes more than a year into Russia’s full-scale offensive in Ukraine, which unleashed an unprecedented crackdown on the Kremlin’s critics, with many now in exile or in jail. President Vladimir Putin’s most prominent critic is being tried at the maximum security prison where he is jailed: IK-6 penal colony, 155 miles (250km) east of Moscow. “The court has decided to make the Navalny trial closed,”...