Prime Minister Nawaz Sharif on Tuesday ceremonially broke ground on a $9.59 billion nuclear power complex to be built in Karachi with China’s help, seeking to ease Pakistan’s long-running energy crisis and signaling a new step by China in becoming a top nuclear supplier. The deal, which officials said was still being finalized, is a major new advance in energy cooperation between the two countries, dwarfing previous reactor projects built along with China at Chashma, in Pakistan’s interior. And it establishes a growing counterpoint to a nuclear axis between the United States and India in recent years that Pakistani officials have seen as an irritant and Chinese officials have seen as a geopolitical challenge. “The beginning of the 2,200-megawatt power project is indeed a proud moment in the energy history of Pakistan,” Mr. Sharif said at the ceremony, adding that the construction was to be completed […]