LSE:RUSB is an ETF on 22 investment grade Russian USD denominated eurobonds. At current moment RUSB trades at significant discount to its own basket. This is a unique buying opportunity that can be captured either by long only investrors or by arbitrageurs. In case of long only - buy at 23.90 and hold enjoying the recovery of Russian eurobonds or put a sell order above fair value being 24.35 to earn about 2% absolute only on spread in approximately a month time plus appreciation of Russian eurobonds. For arbitrageurs - buy RUSB, short FXRU, to capture the spread.