A nuclear-powered People’s Liberation Army submarine fired a test missile on the high seas in the Pacific on Monday, according to Chinese state media. The dummy warhead was fired at 12.01pm, state news agency Xinhua said. It added that it was a routine test and was not aimed at any specific country or target. The report said that relevant countries had been notified ahead of time. The test was China’s first known submarine-based missile test since 1982, and the first known to have been fired...