Exxon Seeks US Waiver to Resume Russia Oil VentureWall Street Journal (subscription)WASHINGTON—Exxon Mobil Corp. has applied to the Treasury Department for a waiver from U.S. sanctions on Russia in a bid to resume its joint venture with state oil giant PAO …

Congressmen Warn Venezuela Default Could Lead to Russian Control of US Oil InfrastructureWall Street Journal (subscription)The prospect of a default by the Venezuelan government or Petróleos de Venezuela SA, the state-owned oil company known as PdVSA, has …