MOSCOW (Reuters) – Russia’s most prominent jailed opposition politician, Alexei Navalny, heaped ironic praise on Tuesday on the polar conditions at the prison north of the Arctic Circle where he was moved to shortly before Christmas. Navalny, 47, was tracked down to the IK-3 penal colony in Kharp in the Yamal-Nenets region, about 1,900 km (1200 miles) northeast of Moscow, his supporters said on December 25. In a post on the Telegram messaging app, Navalny said he had been put in a punishment cell for his attitude as soon as he left quarantine at the so-called “Polar Wolf” prison colony. “It ha…