The reason for this trade i beleive the current Rally in oil we are seeing today is due to API numbers telling us there is a drawdown in oil this week in the US, which is significant news as oil supply is at record high, this will cause the US markets to rally as they have a large amount of oil companies on the exchange, in turn that strenghtens the dollar against the yen, the yen is considered a safe haven when the US markets are falling.