Downside of ruble rally: Price of Brent crude at four-year lows impinges on Russia’s potential budget revenue Vladimir Putin is facing a problem few could have anticipated: The ruble is becoming too strong. Last year’s worst-performing major currency is this year’s best and while that’s buoying the nation’s bonds, driving yields to the lowest in four months, it’s also crimping Russia’s export revenue. Even though oil is little changed in dollars this year, the price when converted to rubles has plunged to the lowest since 2011. The currency rout in 2014 helped Russia to keep its budget deficit within 1 percent of gross domestic product as the ruble weakened in lockstep with a 50 percent slump in oil. Now, with the cease-fire in Ukraine and the allure of higher-yielding assets attracting investors to ruble debt, the government is seeing the opposite effect. “The current ruble level is already uncomfortable […]