MOSCOW — For two decades under President Vladimir V. Putin, Russians reaped the bounties of capitalism and globalization: cheap flights, affordable mortgages, a plethora of imported gadgets and cars.On Monday, those perks of modern life were abruptly disappearing, replaced by a crush of anxiety as sanctions imposed by the West in retaliation for Moscow’s invasion of Ukraine rattled the foundations of Russia’s financial system.The ruble cratered, losing a quarter of its value, and the central bank shuttered stock trading in Moscow through Tuesday. The public rushed to withdraw cash from A.T.M.’s, and Aeroflot, the national airline, canceled all its flights to Europe after countries banned Russian planes from using their air space. Concern about travel was so great that some p …
