Russia’s oil output set a post-Soviet high in March as the success of a proposed crude production freeze between OPEC members and other major producers appeared to be in doubt. Russian production of crude and a light oil called condensate climbed 2.1 percent in March from a year earlier to 10.912 million barrels a day, according to the Energy Ministry’s CDU-TEK unit. That narrowly beat the previous high of 10.910 million barrels in January. With most of the Organization of Petroleum Exporting Countries members, Russia and some others outside the group scheduled to meet in Doha this month to discuss an accord on capping output, Saudi Arabia’s Mohammed bin Salman signaled in an interview with Bloomberg that if any country raises output, the kingdom will also boost sales. Prices on Friday sank more than 4 percent after the comments. Iran previously said it plans to boost production after the […]