The interception of a sanctioned Russian tanker by the USS Stockdale near Venezuela has turned a slow-burning sanctions story into a visible test of sea power, energy leverage, and political resolve in the Caribbean. As Washington tightens the screws on fuel shipments that have been worth roughly 3 billion dollars to Nicolás Maduro's government, the encounter signals that the era of quiet workarounds is giving way to open contests on the water. I see this clash as more than a one-off naval drama. It is the moment when a shadowy sanctions evasion network, a fragile petrostate, and a resurgent U.S....