Global energy and debt markets absorbed fresh shocks as stepped-up Iranian attacks on oil tankers in the Strait of Hormuz drove Brent crude above $101 a barrel and pushed the 30-year U.S. Treasury yield to 5.70%, its highest level since 2002, pressuring equity futures lower. Supply worries were compounded in the Gulf of Mexico, where Tropical Storm Isaias was forecast to become a hurricane threatening offshore rigs and Chevron's Pascagoula refinery. The compounding economic fallout from the war on Iran prompted the World Bank to warn that Asian economies are exhausting foreign exchange…