MARKETS ON EDGE AS OIL AND YIELDS SURGE U.S. stock futures were flat as investors weighed Fed rate-hike risks, U.S.-Iran tensions and key jobs data. Japan’s 10-year bond yield topped 3% for the first time since 1996, adding pressure to global markets. Meanwhile, Brent rose above $91 as threats of further U.S. strikes on Iran fueled concerns over Strait of Hormuz supply disruptions. Investors now await U.S. labor and manufacturing data.(*Walter Bloomberg)