Iranian Oil Minister Bijan Zanganeh says China's national petroleum company has pulled out of a $5 billion deal to help develop Iran's giant South Pars natural gas field in the Persian Gulf. The development, announced by Zanganeh on the ministry's SHANA website, comes amid economic pressure on both Iran and China from the United States. It also follows a series of military confrontations in the area between Iran and the naval forces of Britain and the United States. The China National Petroleum Corporation (CNPC) became the dominant investor in plans for the expansion of South Pars, the world’s largest gas...