Two oil tankers, one Saudi and one South Korean-owned, were hit by projectiles Monday night as the U.S. and Iran returned to hostilities in a six-month war that appears to be locked in a stalemate, with neither side willing to concede any control over the strategic Strait of Hormuz. President Trump said Monday that he might order further strikes on Iran, suggesting the “relatively little war” could be set to intensify militarily despite his administration announcing last week a shift to “economic warfare.” The flare-up, which has put global oil prices back on an upward trajectory, began over the weekend when the U.S. launched its first strikes on Iran in a month, saying it hit rocket launchers on an island in the Strait of Hormuz.

Full U.S.-Iran War Latest: Tankers hit in Strait of Hormuz as Trump mulls more strikes in “relatively little war.”