In the race to supply crude to the world’s biggest energy user, it’s the tussle for second place that’s too close to call. Russia, Angola and Iran are vying to be runner-up to Saudi Arabia as the top seller to China. The contest is set to intensify as Iran seeks to recover market share lost because of sanctions and the U.S. Congress debates a nuclear deal that’ll allow the Persian Gulf state to boost shipments. China overtook the U.S. as the biggest importer of crude most recently in June, taking advantage of a 50 percent slump in benchmark prices over the past year to boost strategic reserves. With the Asian nation forecast to account for more than a quarter of global demand growth in 2016, the prize of becoming a top supplier will bolster the economic health of national producers that depend on energy exports for most of their […]