Exxon Mobil Corp. is ending projects with Russia’s state-controlled energy giant, PAO Rosneft, because of international sanctions on Moscow, abandoning signature achievements of its former chief executive, Secretary of State Rex Tillerson. Exxon said it decided last year to withdraw after the U.S. government imposed new sanctions on Moscow for its alleged interference in the 2016 presidential election. Those penalties came on top of U.S. and European sanctions on Russia over its actions in Ukraine. The withdrawal, for now, marks the end of Exxon’s hopes of drilling in Russia’s Arctic ocean oil fields, considered one of the world’s great unexplored oil and gas basins. Exxon drilled one exploration well that it said produced promising results, but had to halt work because of sanctions. Exxon had hoped drilling could restart in the future, either with the blessing of the Trump administration or the eventual lifting of sanctions. […]