The Japanese yen just sank to its weakest level against the U.S. dollar since December 1986!

USD/JPY pushed through 162.00 during Tuesday’s Asian session, reaching a level last seen when the Cold War was still in its final stretch.

For traders, the real question now isn’t why the yen is this weak. It’s when Japan steps back in, and what that could do to USD/JPY if it does.