The ruble weakened the most in almost two months as Britain’s vote to quit the European Union triggered a flight from riskier assets and pummeled the price of crude oil. The currency of the world’s biggest energy exporter weakened 2.8 percent in to 65.695 per dollar as of 10:29 a.m. in Moscow, the sharpest intraday slump since May 4. Stocks and government debt fell the most since January when crude hit its lowest level in more than a decade. Brent plummeted as much as 6.6 percent on Friday, weakening with most commodities. The ruble joined a rout in developing-nation currencies after Britain voted to end its more than four-decade membership of the European Union. Crude and natural-gas sales account for about 60 percent of Russia’s exports, and Friday’s slump pared the ruble’s recovery from a record low at the start of the year. “I think we’ve got further to […]