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Iran Conflict 2026
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Ukraine's strikes move to the Azov

2 min read
15:23UTC

Ukraine's drones shifted from Russian refineries to fuel tankers in the Sea of Azov, cutting vessel traffic there by a possible 55% between 30 June and 11 July.

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Key takeaway

Ukraine's strike campaign moved to Sea of Azov fuel tankers, cutting traffic there by a possible 55%.

Ukraine's long-range strike campaign shifted in the first fortnight of July from static refineries to the seaborne tankers carrying fuel across the Sea of Azov, the Institute for the Study of War (ISW) reported 1. Automatic identification system tracking from Starboard Maritime Intelligence, a commercial firm that monitors ship movements, recorded a possible 55% drop in Azov traffic between 30 June and 11 July 2.

Through June the campaign had reached deep inside Russia: the Kapotnya refinery near Moscow , the Tyumen plant two thousand kilometres from the border in Siberia , and airbase hangars at Saky on 1 July . Targeting the tankers changes the class of target from fixed installations to moving cargo, and it reaches the fuel at the point it leaves the country.

The tanker campaign works through logistics rather than firepower. Strike the vessels and the fuel cannot sail, so it backs up at the terminals the domestic market also draws on, pushing Russian pump prices higher 3. The diesel export ban exists in part to hold that backup inside Russia's borders.

Deep Analysis

In plain English

Ukraine has been bombing Russian oil refineries for months. Now it has widened the campaign to hit the ships that carry Russian fuel across the Sea of Azov, the inland sea between the two countries. A commercial tracking firm called Starboard Maritime Intelligence, which follows ship movements by radio signal, recorded roughly half as many vessels crossing the Azov between 30 June and 11 July as before. This matters because even fuel that survives the refinery still has to reach a buyer by ship. Targeting the tankers themselves, alongside the plants that make the fuel, closes off one more route Russia has been using to keep exports moving.

Deep Analysis
Root Causes

Refineries are fixed, defended, and can be patched or partially restarted; ocean-going tankers moving through the Sea of Azov's narrow approaches have far less air-defence cover and cannot be dispersed once under way, which makes them a softer target once Ukraine's strike range and targeting data allow it.

The economic incentive compounds this: the fuel crunch behind Russia's own diesel export ban tightens what refined product is even available to ship, so every remaining cargo becomes a higher-value target for the strike campaign to interdict.

Escalation

Direction: expanding target set from land-based refineries to seaborne logistics, a widening rather than a de-escalation of the strike campaign. Evidence: the 55% AIS traffic decline follows earlier June refinery strikes on Kapotnya and Tyumen, suggesting a deliberate broadening rather than a one-off incident.

What could happen next?
  • Consequence

    Vessel operators may increasingly go dark on AIS transponders to avoid becoming targets, which would make future traffic-decline figures harder to interpret as damage versus evasion.

Sources:Institute for the Study of War / Critical Threats Project·Institute for the Study of War / Critical Threats Project·Institute for the Study of War / Critical Threats Project
Mentions:Ukraine →Sea of Azov →Russia →Ust-Luga →Caspian Pipeline Consortium →Novorossiysk →Primorsk →Kapotnya refinery →Institute for the Study of War →Moscow →RUSI →Starboard Maritime Intelligence →
First Reported In

Update #23 · Moscow rations diesel as US cover lapses

Institute for the Study of War / Critical Threats Project· 13 Jul 2026
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Causes and effects
Caused by
Drone strike shuts Kapotnya near Moscow
The June Kapotnya refinery strike was an early step in the campaign that escalated to tanker strikes in the Sea of Azov.
Occurred 18 Jun 2026
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Ukraine hits Siberia, 2,000 km deep
The June Tyumen refinery strike was an early step in the campaign that escalated to tanker strikes in the Sea of Azov.
Occurred 20 Jun 2026
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Saky hangars and Penza plant hit
The 1 July Saky airbase strike preceded the campaign's shift to seaborne fuel tankers in the Sea of Azov.
Occurred 1 Jul 2026
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Ukraine says it hit 159 tankers
The 159-vessel tally extends the shift to Sea of Azov and shadow-fleet tanker strikes.
Occurred 15 Jul 2026
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This Event
Ukraine's strikes move to the Azov
Striking tankers rather than refineries lets Ukraine choke Russian fuel logistics at a moving chokepoint the domestic market depends on.
Led to
Moscow bans its own diesel exports
Ukraine's tanker-strike campaign in the Sea of Azov created the fuel-supply pressure the diesel export ban was issued to contain.
Occurred 8 Jul 2026
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Sea drones push into the Black Sea
The Black Sea expansion follows directly from the Azov chokepoint tactic that had cut tracked traffic by 55% eleven days earlier.
Occurred 15 Jul 2026
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Crimea lost its summer to the blackouts
Ukraine's drone campaign against Azov fuel tankers is the supply chain behind Crimea's collapsed season.
Occurred 30 Jul 2026
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Different Perspectives
Lloyd's Market Association
Lloyd's Market Association
War-risk underwriters price the Houthis' Red Sea attacks because the group announces its targets in advance, but the unclaimed Damietta drone gives insurers a hit with no author to price against. An attack nobody claims costs shipping more than one that is claimed, since premiums are set against a known pattern, not raw damage.
US Central Command
US Central Command
CENTCOM has announced no strike on Iran since resuming bombing on 30 July within hours of an IRGC salvo on Jordan, and centcom.mil did not respond to requests to confirm any pause. The command has gone quiet before while a larger operation was being weighed, so silence alone proves nothing about what it has or has not done.
Hengaw
Hengaw
Hengaw recorded at least 67 executions in Iran during July, of which the state acknowledged only eight, and reported the 1 August execution of protest detainee Arvin Kheirkhahan at Shahrud with no advance notice to his family. A family's first notice of a death sentence is now usually the instruction to collect a body.
Egypt
Egypt
Egypt's government asked media on 2 August to report the Damietta attack accurately, named no author, and said no findings will be published before its own investigation concludes. Cairo holds the debris and jurisdiction over an attack on its own soil, and naming a culprit now would pull it into a dispute it has avoided for five months.
Iran's Foreign Ministry
Iran's Foreign Ministry
Araghchi called the Hormuz talks with Oman final-stage on 2 August, four days after his own deputy rejected Oman's lane proposal, and denied the Damietta drone strike as an Israeli false flag while two Iranian officials privately claimed it for Tehran. Iran's public position now contradicts itself on both files at once.
Bahrain and Kuwait
Bahrain and Kuwait
Bahraini and Kuwaiti aircraft flew their own strikes on Iranian depots in July with Emirati air cover behind them, and Ynetnews reports some Gulf capitals wanted the 2 August strike to proceed rather than stop. States that have already taken fire see a closing window on Iranian weakness, not a reason to pause.