March 30, Moscow close: — Oil prices fell heavily Monday as Saudi Arabia said it would raise its exports to a record high of 10.6 million barrels a day starting May. Brent crude dropped 12% to below $22 a barrel. — Despite the oil rout, the ruble managed to slightly improve throughout the day, to close out trading in Moscow at 79.8 against the U.S. dollar. — The stock markets were also largely unmoved in a day of rare stability. The RTS Index was flat, while the MOEX Index was up 0.9% for the day. — The market could yet be shook in overnight trading as U.S. President Donald Trump and his Russian counterpart Vladimir Putin are set to discuss the global oil market and U.S. sanctions against Russia on a telephone call Monday evening.