Asian stock markets rebounded Thursday as anxiety over potential U.S.-Iranian conflict eased. Tokyo’s benchmark gained more than 2%. Shanghai, Hong Kong and Southeast Asia markets also advanced. India’s Sensex opened 1.3% higher at 41,343.60. On Wall Street, the benchmark S&P 500 index rose 0.5% to 3,253.05. The Dow Jones Industrial Average advanced 0.6% to 28,745.09.