An incident involving Iran's Sabiti oil tanker on Oct. 11 in the Red Sea increasingly appears to have resulted from an attack, marking the latest major hostile incident in a region on edge in recent months after Iranian or Iranian-backed attacks on oil-related targets. Images released by Iran in the last several days show two large holes in the tanker's starboard hull, suggesting a projectile or limpet mine breached it. If Israeli forces were responsible, it would fit into a pattern of a more robust and increasingly expansive effort by Israel against Iran and its allies....