The paper's kharg-siege-day-three argued the key metric was no longer diplomacy but storage saturation. Day Four keeps that frame, but with a new wrinkle: the estimate gap between leading trackers has grown wide enough to change shutdown timing by days, not hours [1].

Both camps still agree on direction - storage is filling under blockade pressure. The dispute is denominator and available buffer: one model counts practical operable capacity after safety margins, another counts nominal tankplate capacity. In tight conditions that difference can move forecasted shut-in windows materially [2].

Policy implication: Washington can claim rising pressure regardless of whether utilization is 91 or 94 percent, but Tehran's operational planners cannot. They must choose whether to throttle production before hard limits or test the edge and risk chaotic curtailment. Day Four therefore shifts from "is pressure real" to "when does engineering force the next political move." Divergent OSINT does not erase the squeeze; it obscures the clock [3].

That clock uncertainty is itself strategic. It complicates outside forecasting and can produce contradictory policy takes in the same news cycle, even when all serious models point to near-limit conditions. For markets and mediators alike, the only robust signal remains directional: storage is still tightening under blockade conditions [1][2].

-- YOSEF STERN, Jerusalem