OAO Sberbank declined the most in a week, extending its slump from this year’s high to 24 percent, as a weakening ruble, international financing restrictions and higher loan provisions worsen the outlook for the Russian bank’s profits. The American depositary receipts dropped 4 percent to $4.81 in New York on Tuesday. A Bloomberg gauge of U.S.-traded Russian stocks slid 1.7 percent. Sberbank, which holds about half the nation’s deposits, tumbled 69 percent in 2014 as oil prices plunged and the state-controlled bank was cut off from U.S. and European credit markets under sanctions linked to the Ukraine conflict. Sberbank, widely seen as a proxy for Russia’s economy, has been squeezed by high borrowing costs, while a slump in oil, the nation’s biggest export, exacerbated the impact of the international sanctions, pushing the country into its first recession since 2009. Even though the central bank has been reducing interest rates […]