Police officers detain a man at Moscow's Vnukovo airport where Russian opposition leader Alexei Navalny is expected to arrive on January 17, 2021. - Chief Kremlin critic Alexei Navalny returns to Russia from Germany on January 17, facing imminent arrest after authorities warned they would detain him. The 44-year-old opposition leader is flying back to Moscow after spending several months in Germany recovering from a poisoning attack that he said was carried out on the orders of President Vladimir Putin. (Photo by NATALIA KOLESNIKOVA / AFP)