Ukraines

Russian forces have struck Ukraine’s southern Black Sea port of Odesa, damaging port facilities and a ship, the region’s governor says.

The attack late on Monday followed another at the weekend when Moscow carried out a sustained barrage of drones and missile attacks on the wider area around Odesa, which is home to ports crucial to Ukraine’s overseas trade and fuel imports. They followed Russian threats to cut “Ukraine off from the sea”.

The escalation in Russia’s assault on Odesa, Ukraine’s biggest port city, has unfolded as Washington steps up diplomatic efforts to bring an end to the war. Ukrainian officials met members of a US delegation on Friday in Florida while US envoys held talks with Russian representatives on Saturday.

“The situation in the Odesa region is harsh due to Russian strikes on port infrastructure and logistics,” Ukrainian President Volodymyr Zelenskyy told reporters in Kyiv on Monday. “Russia is once again trying to restrict Ukraine’s access to the sea and block our coastal regions.”

What happened in the latest Russian attack on Odesa?

On Tuesday, the head of the Odesa Regional Military Administration, Oleh Kiper, said Russian strikes overnight had damaged a civilian cargo vessel and a warehouse in a district of Odesa while the roof of a two-storey residential building had caught fire.

Meanwhile, strikes on Saturday on the port of Pivdennyi near Odesa damaged storage reservoirs, Ukrainian Deputy Prime Minister Oleksii Kuleba said. Those came just one day after a ballistic missile strike, also in Pivdennyi, had killed eight people and wounded at least 30.

These are just the latest strikes in an escalation of hostilities in the area over the past few weeks.

Last week, Russia launched one of its largest aerial assaults of the war on the Black Sea region, damaging energy infrastructure and causing a power outage in Odesa, leaving hundreds of thousands of residents without electricity for several days.

Russia’s Ministry of Defence did not immediately comment on the strikes, but the Kremlin has previously described Ukraine’s economic infrastructure as a “legitimate military objective” during the nearly four-year war.

On the Telegram messaging app, Kuleba said on Friday that Russian forces were targeting power infrastructure and a bridge over the Dniester River near the village of Mayaky, southwest of Pivdennyi, which was struck five times in 24 hours.

That bridge links parts of the region separated by waterways and serves as the primary westbound route to border crossings with Moldova. It is currently out of operation. Kuleba said the route normally carries about 40 percent of Ukraine’s fuel supplies.

Why is Russia targeting Odesa?

“The focus of the war may have shifted towards Odesa,” Kuleba said, warning that the “crazy” attacks could intensify as Russia tries to weaken Ukraine’s economy.

Russian President Vladimir Putin has previously said Moscow wants to restrict Ukraine’s Black Sea access in retaliation for Kyiv’s recent drone attacks on Russia’s sanctions-evading “shadow fleet” of vessels, which carry a variety of commodities.

Ukraine said those vessels are used to illegally export sanctioned oil, which provides Russia with its main source of revenue for financing its full-scale invasion of its neighbour.

How important is the port of Odesa to Ukraine?

Odesa’s port has long been central to Ukraine’s economy. Called a “pearl by the sea”, Odesa is Ukraine’s third most populous city after Kyiv and Kharkiv.

Black Sea ports – including Odesa and two others close by, Pivdennyi and Chornomorsk – and Mykolaiv to the east handled more than 70 percent of Ukraine’s exports before the war.

But Odesa’s role as a trading hub has grown in recent years as ports in the Zaporizhia, Kherson and Mykolaiv regions have been occupied by Russia.

Since the war began in February 2022, Ukraine has continued to rank among the world’s top five exporters of wheat and corn – largely through Odesa.

By targeting Odesa’s shipping facilities with missiles and drones, Ukrainian officials said, Putin aims to destroy Ukrainian trade and business infrastructure.

Zelenskyy, who has previously accused Russia of “sowing chaos” on the people of Odesa, said: “Everyone must see that without pressure on Russia, they have no intention of genuinely ending their aggression.”

What would it mean for Ukraine if Odesa were destroyed?

If the port of Odesa were badly damaged, the economic impact for Ukraine would be severe. The city and its surrounding areas would suffer major job losses in the shipping and logistics industries, seriously squeezing local incomes. Meanwhile, port-dependent businesses would falter and investment would fall away.

Nationally, Ukraine’s export capacity would be hit hard. As a key gateway for grain and other commodities, disruptions there would raise transport costs, slow shipments and reduce export volumes, choking foreign currency earnings and piling pressure on the hryvnia, Ukraine’s currency.

Elsewhere, farmers would suffer from lower prices for their produce as well as storage bottlenecks with knock-on effects across rural economies. The government would also lose customs revenue just as reconstruction costs would rise, weakening the country’s overall economic resilience.

What other acts of maritime warfare have Ukraine and Russia engaged in during the war?

Over the past six months, maritime warfare between Ukraine and Russia has intensified. Both sides have targeted naval and commercial assets across the Black Sea and beyond.

Ukrainian forces have increasingly used underwater drones and unmanned surface vessels to strike ships tied to Russia’s shadow fleet.

Several shadow fleet tankers, including the Kairos and Virat, were hit by Ukrainian naval drones in the Black Sea near Turkish waters in late November.

Kyiv has expanded its reach elsewhere, claiming drone strikes in the Mediterranean on December 19 on the Qendil, a Russian-linked tanker, marking an expansion in Kyiv’s maritime operations.

At the same time, Russian forces have ramped up attacks on commercial targets, including a Turkish-flagged ship carrying trucks and other freight near Odesa with drone attacks on December 13.

These actions reflect a shift towards what is referred to as “asymmetric naval warfare”, in which drones and improvised systems play a growing role in disrupting each side’s economic and military support networks at sea, experts said.

A Russian ballistic missile strike on port infrastructure in Ukraine’s Odesa port in the south has killed at least eight people and wounded 27, as Moscow intensifies attacks on the strategic Black Sea region and talks to end the war remain in a critical stage.

The attack late on Friday hit critical logistics infrastructure, with some of the wounded trapped on a bus at the strike’s epicentre as trucks caught fire in a car park.

Ukrainian officials say the bombardment is part of a sustained Russian campaign against Odesa’s civilian infrastructure that has left more than two million people without electricity, water and heating for days amid freezing temperatures in the war’s fourth punishing winter.

Moscow struck the same port again on Saturday, hitting reservoirs in what Ukrainian Deputy Prime Minister Oleksii Kuleba described as deliberately targeting civilian logistics routes.

The escalation comes as both sides trade blows across multiple fronts, while United States-led negotiations and numerous high-level meetings in Europe to end the war lumber on without a breakthrough.

Russia claimed on Saturday to have seized the villages of Svitle in the eastern Donetsk region and Vysoke in the northeastern Sumy region, though the reports could not be independently verified.

Ukraine has responded with a widening campaign against Russian military and energy assets.

On Friday night, Ukrainian drones struck the Filanovsky oil rig belonging to Russian energy giant Lukoil in the Caspian Sea, along with a military patrol ship patrolling near the platform.

The attack marked the first officially acknowledged Ukrainian strike on Caspian drilling infrastructure, though the rig had been hit at least twice before in December.

Between December 14 and 15, Ukrainian forces used sea drones to strike a Russian Kilo-class submarine at the Novorossiysk Naval Base in the Black Sea, according to a United Kingdom Defence Intelligence assessment.

Miami talks

The attacks unfold as American and European officials gather in Miami for weekend talks aimed at ending the nearly four-year war, with Russian and Ukrainian teams also in attendance.

Russian envoy Kirill Dmitriev said on Saturday he was heading to Miami.

US Secretary of State Marco Rubio said Washington would not force Ukraine into any agreement, though he described the conflict as “not our war”.

Trump envoys Steve Witkoff and Jared Kushner are leading discussions with Ukrainian negotiator Rustem Umerov and officials from the UK, France and Germany. Russian representatives, including Kremlin key negotiator Dmitriev, are meeting separately with American officials.

The key obstacle remains territorial concessions, with reports suggesting Washington is pushing Kyiv to cede parts of the eastern Donetsk region.

Russian President Vladimir Putin showed no signs of compromise at his annual choreographed news conference on Friday, pledging to press ahead with military operations and predicting new successes before the year’s end.

Putin’s remarks were the latest in a drumbeat of often-repeated maximalist Russian positions nearly four years after he ordered troops into the neighbouring country.

The issue of territory gained, lost, to be ceded or not, delves into the heart of the matter on one of the most contentious issues in the talks to end the war so far.

Putin has demanded Ukraine cede all territory in four key regions his forces have captured and occupied, along with Crimea, which Moscow seized and annexed in 2014.

He also wants Ukrainian troops to withdraw from parts of eastern Ukraine that Russian forces have not yet taken in the eastern Donetsk region, where fighting remains attritional – conditions Kyiv has rejected outright.

As talks continue, so does the fighting, with Russia controlling large parts of Ukraine’s eastern and Black Sea coastal regions.

Putin projected confidence on Friday about battlefield progress, saying Russian forces had “fully seized strategic initiative” and would make further gains before the year ends.

However, that narrative is on shaky ground this week, as Moscow’s assertion of inevitable victory flew in the face of facts on the ground.

Ukraine steadily took back control of almost all of its northern city of Kupiansk after isolating Russian forces within it, belying Russian claims to have seized it.

Russian forces were also unable to dislodge Ukrainian defenders from the eastern city of Pokrovsk in the eastern area of Donetsk to back up Moscow’s claims of total control.

Ukraine received a boost on Friday when European leaders agreed to provide a 90 billion euros ($105bn) loan to cover military and economic needs for the next two years.

President Volodymyr Zelenskyy, who met Polish President Karol Nawrocki in Warsaw the same day to reinforce regional unity against Russia, said the funds would go towards defence if the war continues or reconstruction if peace is achieved.

Satellite imagery is now available showing the aftermath of a Ukrainian attack yesterday on a Russian Navy Improved Kilo class diesel-electric submarine in the Black Sea naval stronghold of Novorossiysk. The Security Service of Ukraine (SBU) claimed that this was the first attack against a Russian vessel using an uncrewed underwater vehicle (UUV). The operation could also mark the historic first successful use of a UUV as an anti-ship weapon, but the actual level of damage inflicted on the submarine remains unclear. Readers can first get up to date on the attack in our initial reporting here.

TWZ obtained satellite images of where the attack occurred in Novorossiysk from Vantor (formerly Maxar Technologies). Additional imagery from Planet Labs has also been circulating online.

The satellite imagery confirms that the UUV — named by the SBU as a Sub Sea Baby, a previously unknown type — detonated off the stern of the submarine, which was at a pier in the port of Novorossiysk. A substantial chunk of the pier itself was destroyed in the attack. This all aligns with video footage shot during the attack from a position on the ground nearby, which the SBU released yesterday.

The post-strike imagery shows that the Improved Kilo class submarine, also known as a Project 636.3 Varshavyanka class type, is in the same position as it was before the attack. Two other submarines that were moored nearby when the attack occured have moved. Other submarines and ships are still in the moorings, including on the outside edge of the damaged pier.

Some of the imagery available now suggests that the submarine that was attacked may now be sitting lower in the water, but that can’t be readily confirmed. Any damage below the waterline would also not be visible in the images. At the same time, there are also no clear signs of any emergency measures having been taken to keep it afloat, or to contain the leakage of oil or other potentially hazardous fluids, as one might expect to see if the damage was severe.

Based on the estimated length of what is visible of the submarine, some observers have noted that the epicenter of the explosion looks to have been less than 65 feet from the stern. The size and configuration of the Sub Sea Baby’s warhead, as well as other details about the UUV and its capabilities, remain scant.

Satellite imagery shows the aftermath of a strike by a Sea Baby underwater drone against a submarine pier in the port of Novorossiysk.

According to the image, the strike occurred approximately 20 meters from the stern of a Project 636 Varshavyanka-class submarine, which remains… https://t.co/SVecegvkeD pic.twitter.com/fxOicR5AAW

— OSINTWarfare (@OSINTWarfare) December 16, 2025

To note, the stern section of Kilo-class submarine remains submerged so presumably it was even closer than 20 meters.

Highly probable that at least the propelled end got affected in a kinetic way.

(satellite imagery I’ve used is not recent and used for illustration purposes… https://t.co/fwO0UldAZs pic.twitter.com/qxNHs2AEQf

— Status-6 (Military & Conflict News) (@Archer83Able) December 16, 2025

It’s also worth noting that wider views of the port of Novorossiysk following the attack show four Project 636 submarines still present. There is nothing definitive to indicate that the targeted boat might have been replaced by another to conceal the extent of the damage.

Satellite reveals that four Kilo-class submarines are docked at the Novorossisk port in Russia. One of them appears to have a slightly different waterline compared to the other three. Ukraine claimed that its underwater UV launched an attack on the area via Mizarvision #OSINT pic.twitter.com/k1DLtOcloL

— GEOINT (@lobsterlarryliu) December 16, 2025

For its part, the Russian Ministry of Defense had unsurprisingly denied that any damage was inflicted on the submarine or to any personnel at the port. The ministry has released a video that it claims shows the undamaged boat, but does not offer a view of the stern end. The background is also heavily censored. Even so, it does still reveal what looks like piles of broken concrete debris left on the pier after the explosion, which was clearly visible in the SBU’s video of the attack, as well as in the satellite imagery available now.

The press service of the Russian Black Sea Fleet, which operates the submarine, also denies any damage to its vessels. This is also consistent with reports from various Russian naval monitoring channels on social media, but clear corroborating evidence has yet to emerge.

Overall, at this stage, we still cannot say with any authority what degree of damage, if any, the submarine may have actually sustained.

On the other hand, the attack does show Ukraine was at least able to slip a UUV into a heavily defended harbor, in daylight, and detonate its warhead only a few dozen or so feet away from a prized Russian submarine worth, according to the SBU, around $400 million.

At least one Ukrainian UUV was therefore notably able to penetrate past barriers erected at the mouth of the port, intended specifically to protect the vessels within. It’s worth noting, however, that the defensive barriers Russia has already built around ports were primarily put there in response to Ukraine’s uncrewed surface vessel (USV) campaign. This underscores the significance of the use of a UUV in this attack, as another example of the steady adaptation of weapons systems and tactics in response to countermeasures that has become a particular hallmark of the conflict in Ukraine.

With that in mind, Russia is likely to introduce new countermeasures against this particular mode of attack, one which Ukraine has spent some time developing.

The results of yesterday’s attack, while inconclusive for now, will likely spur further such developments in Ukraine, as well. Before SBU targeted the submarine in Novorossiysk, Ukraine had unveiled a UUV dubbed Marichka, designed to launch kamikaze attacks against ships and maritime infrastructure. At least one other Ukrainian UUV, known as Toloka, has previously been disclosed. It’s unclear if either of these has any relationship to the Sub Sea Baby.

Video of the Toloka UUV:

Автономний підводний дрон TOLOKA

Furthermore, the attack confirms that the Black Sea Fleet is very much still a prime target for Ukraine. This applies especially to the submarines like the Project 636 types and corvettes that are able to launch Kalibr long-range cruise missiles. These weapons have been regularly used in Russia’s nightly barrages launched against targets across Ukraine.

Already, Ukrainian naval actions had forced the Black Sea Fleet to retreat from bases on the occupied Crimean Peninsula to Novorossiysk. Attacks in Crimea were also prosecuted against another Improved Kilo class submarine. In September 2023, the Rostov-on-Don was severely damaged during a combined missile and USV attack on Sevastopol. Ukraine later claimed it was destroyed.

At the start of Russia’s full-scale invasion of Ukraine, the Black Sea Fleet had a total of six Project 636 submarines available.

Other navies around the world will likely have watched yesterday’s attack with interest.

As well as the United States, China and many other nations are developing their own UUVs for missions like this one.

UUVs are able to attack vessels and other targets at long distances and can be launched from submarines and motherships, further extending their range. They can also be used for surveillance and mine laying, among other duties. You can read more about these vessels in various TWZ stories here.

Ultimately, whether or not the Russian submarine was damaged, the attack has demonstrated once again that the war in Ukraine is a crucible for the development of new military technologies, especially uncrewed ones.

Contact the author: thomas@thewarzone.com