European Union leaders agreed this week to a partial ban on Russian oil imports, overcoming a veto by Hungarian Prime Minister Viktor Orban. But the agreement commits only to banning seaborne imports to the EU by the end of 2022, leaving Russian oil imported by pipeline untouched. Seaborne imports account for two-thirds of the oil the EU purchases from Russia, leaving one-third outside the ban’s scope. However, Germany and Poland announced at this week’s leaders’ summit in Brussels that they will not use the exemption, pledging to phase out both seaborne and pipeline imports by the end of this year. […]