The ruble declined for a fourth day, poised for the longest losing streak since February, as oil retreated and Citigroup Inc. cautioned the Russian currency could depreciate further against a rising dollar. The ruble dropped 0.2 percent to 66.96 per dollar by 11:28 a.m. in Moscow, after losing 2 percent last week. Brent crude, the oil benchmark for pricing the country’s main export blend, declined 0.8 percent to $48.32 a barrel in London. Russian stocks declined, while government bonds were little changed. The world’s best currency rally in the past three months is growing vulnerable to higher U.S. interest rates that Federal Reserve officials signaled could come as early June, according to Citigroup strategists. While driving the greenback higher, rate hikes would also sap appetite for riskier assets and diminish the appeal of a carry trade that helped investors make up gains lost to zero rates. “I think the […]