The United States has seized a fifth oil tanker linked to Venezuela, intensifying its maritime crackdown on sanctioned oil shipments in the Caribbean. U.S. forces intercepted the tanker Olina in a pre-dawn operation involving the Coast Guard and Joint Task Force Southern Spear, accusing the vessel of evading sanctions by sailing under a false flag. Washington says the operation is part of a broader effort to pressure the regime in Caracas by cutting off illicit energy exports, marking a sharp escalation in U.S. enforcement at sea.