A measure of global foreign-currency volatility matched its highest level in almost a month as traders speculated that Federal Reserve Chair Janet Yellen’s speech in two days may give clues on the path of U.S. interest rates. A gauge of the dollar held a three-day advance after futures traders priced in an increased probability of a rate increase by December. The Fed chief is slated to speak Friday at the annual monetary-policy symposium in Jackson Hole, Wyoming. Bloomberg View's Mark Gilbert and World Economic Forum Head of Global Competitiveness Margareta Drzeniek-Hanouz discuss with Francine Lacqua on "The Pulse."