**No.**
Stealing millions of barrels of oil *every night* without anyone noticing is not feasible.
- A VLCC supertanker holds ~2 million barrels. Scaling that daily requires multiple large vessels operating covertly.
- Global shipping is tracked by satellite, AIS (even when spoofed), insurance, and intel agencies. Iran’s exports (~1.5M bpd via Kharg) and revenue would show massive, immediate shortfalls.
- Iran’s production is ~2.8–3.5M bpd. Diverting “millions” secretly would be obvious to markets, buyers (mainly China), and Tehran.
- Storage, transport, and refining the crude without detection adds impossible logistics.
Any real interdictions in conflict are overt and noticed fast. Announcing it publicly also ends the “secret” part.