Helped by an interest rate cut that was made possible by cooling inflation and news that a bad debt asset management company is finally coming to fruition, the Market Vectors Vietnam ETF (NYSE: VNM ) will likely finish the month of May with a gain of more than eight percent. VNM was up 10.5 percent for the month before Friday, but is currently down 1.5 percent. Oil market volatility is an ever-present issue for NGE as is banking system fragility for VNM.