(Reuters) – Jailed Kremlin critic Alexei Navalny has been placed in solitary confinement for 10 days in a prison above the Arctic circle for “incorrectly introducing himself” to a guard, his spokesperson said late on Monday. Navalny, 47, a former lawyer who rose to prominence more than a decade ago by lampooning President Vladimir Putin’s elite and voicing allegations of vast corruption, is currently in a jail about 60 km (40 miles) north of the Arctic Circle. Kira Yarmysh, his spokesperson said on X late on Monday that it was the 25th time Navalny had been placed in solitary confinement and t…