One of the Chinese military’s two most senior leaders has disappeared from public view. U.S. intelligence agencies think he is the latest victim of a political purge in the upper ranks of the People’s Liberation Army, according to defense officials. Gen. He Weidong, one of two vice chairmen of the Central Military Commission, the Chinese Communist Party’s military control organization, disappeared from public view more than 10 days ago. His disappearance has been the subject of rumors for a week. Two officials confirmed that President Xi Jinping is purging Gen. He. Mr. Xi is chairman of the CMC. The comments...