In the volatile waters of the Persian Gulf, the United States and Iran have crossed another threshold — moving from the language of deterrence into the grammar of direct military exchange. American forces struck three Iranian oil tankers operating in what officials described as a clandestine sanctions-evasion network, a calculated response to Iranian missile attacks on two U.S. warships days prior. The choice of economic infrastructure over military targets speaks to a strategy of measured pressure, yet the accelerating rhythm of provocation and retaliation raises the oldest question in confli