The confrontation between Russia and Ukraine in January over natural gas raises questions not just for Europe, but also for the US, experts indicated at a recent seminar at the Heritage Foundation.“Russia’s energy influence extends all over the world, including the US. The importance of its gas is that its European customers are tied to the pipeline and can’t replace supplies from elsewhere,” said Marshall I. Goldman, emeritus professor of Russian Economics at Wellesley College and a senior scholar at the Davis Center for Russian Studies at Harvard University.Edward C. Chow, a senior fellow in the energy and national security program at the Center for Strategic and...