LONDON (AP) — Taken on its own, Iran's seizure of a British-flagged oil tanker in the Strait of Hormuz may seem like a brazen act of aggression, a provocative poke in the nose to both Britain and its ally, the United States. But Iran seems to view the armed takeover of the Stena Impero as a carefully calibrated response to the July 4 taking of an Iranian supertanker off the coast of Gibraltar, an operation in which Britain's Royal Marines played a major role. Though the official reasons for the takeovers differ, it's fairly clear now that the seizure of the British vessel may give Tehran more leverage to get its own ship back. While Britain says it acted near Gibraltar because the Iranian tanker Grace 1 was busting sanctions by delivering oil to Syria, Iran says it intervened because the British-flagged tanker hit an Iranian fishing boat. The current tensions between Iran and the West have been escalating since President Donald Trump withdrew the U.S.