Russian revenues from oil and gas plunged by 17% in March from a year earlier, according to data from Russia's finance ministry. Oil and gas revenues for the Kremlin fell to $13.1 billion (1.1 trillion Russian rubles) last month, while revenues for the first quarter dipped by nearly 10% on the year to $31.4 billion (2.64 trillion rubles), the official Russian data showed. Much of the decline was likely attributable to the lower oil prices in February and March, as well as the initial chaos with Russian oil trade after the U.S. sanctions from early January-the most aggressive sanctions on...