A sea drone was used to save two crew members of a downed US army helicopter off the coast of Oman earlier this week, according to the US military - making it the first publicly known instance of an unmanned vessel being used to conduct a rescue mission. President Donald Trump said the apache helicopter was shot down by Iran near the Strait of Hormuz - the dangerous waterway which has been largely blocked off to shipping since the start of the Iran war. The two soldiers were safely rescued within approximately two hours and are in stable condition, US Central Command (Centcom) said. BBC Verify has examined what we know about the drone boat and how the mission took place. What is the US sea drone?

Fully autonomous drones with no human oversight have killed soldiers on the battlefield for the first time. This is according to a senior figure in the Ukrainian defence industry, marking a watershed moment in warfare. The one-off test involved 10 AI-controlled "Terminator" drones on the front line of the Ukraine war. "We tried it," says drone-maker Alexander Kokhanovskyy, who supplied the technology and spoke to at a press event hosted by the Ukrainian embassy. We never implemented it [more widely]." The test took place two years ago and involved quadcopter drones that were programmed to fly towards the front line, cover between 3 and 5 kilometres over around 10 minutes and then engage "Terminator mode", in which an AI model searches for and intercepts targets. "We just launch it and we know everything will be dead - everything that will be found there in this particular area will be dead," says Kokhanovskyy. "There is no connection to the drone at all, you cannot see the video, ...

Recent incidents heighten anxieties that hybrid warfare tactics could trigger military confrontation with Russia. Lithuanian armed special forces and members of the Lithuanian Riflemen's Union take part in a military exercise in central Lithuania [File: Nils Adler/Al Jazeera] A member of the Lithuanian Riflemen's Union joins in military exercises in central Lithuania [File: Nils Adler/Al Jazeera] Along the forests and marshlands that separate the Baltic states from Russia and Belarus, workers are digging anti-tank ditches, pouring concrete bunkers and erecting rows of dragon's teeth - jagged concrete obstacles designed to slow and channel advancing armour - to buy precious time in the event of an attack. Russia's full-scale invasion of Ukraine in 2022 reignited old fears in Estonia, Latvia and Lithuania, where memories of Soviet rule remain close to the surface. In the years since, those fears have been channelled into preparation. Defence budgets have surged, military exercises have intensified, and new fortifications have emerged even as daily life largely continues as normal.

Two crew members of a US army helicopter that crashed near the Strait of Hormuz on Monday were rescued by an American sea drone, US officials have told CBS News, the BBC's media partner. It was the first such operation carried out by US forces, the officials added. US Central Command (Centcom) earlier said the two soldiers were safely rescued within approximately two hours and are in stable condition after their AH-64 Apache helicopter went down near the coast of Oman while patrolling regional waters. It was not immediately clear whether the aircraft had developed a mechanical or any other technical problem, or had been downed by Iranian fire. The incident is being investigated.

Throughout his time as Russian President, Vladimir Putin has been alert to the power of visual imagery. The first time I interviewed him in 2001, an aide swooped in just before the cameras went live and snatched away the small water glasses on the table in front of us. Why did you do that? We wouldn't want anyone to think they were for vodka, came the reply. And anyway, we can't risk a glass spilling live on TV.

'No-one feels safe now': Residents of Romanian city hit by drone share fears In some parts of Europe, Russia's full-scale invasion of Ukraine can feel like a distant threat. But in Romania, that war is right next door and increasingly dangerous. In Galati, there is an apartment block with a hole in the roof that proves it. Residents have just begun returning to check on their homes, after an attack drone slammed into the building early on Friday as dozens of people slept. It sparked a fire and panic.

The Ukrainian military is stepping up its campaign to destroy vehicles supplying Russian forces along crucial roads in occupied Ukraine using new AI drone technology, experts say. BBC Verify has confirmed footage of at least 14 incidents published in the past week of vehicles carrying food, fuel and ammunition being targeted along critical routes connecting Russia to Crimea and other occupied territories in southern Ukraine. Ukraine is starting to regain more ground than it is losing for the first time since 2023, analysis from the Institute for the Study of War (ISW) indicates. After more than four years of war and increased Russian occupation of eastern and southern Ukraine, neither side has gained any significant ground in recent months. Experts say recent drone technology advancements, including the AI-enabled Hornet system, have allowed Ukraine to attack Russian targets travelling to the front lines at greater distances and with increased accuracy.

Romania says a drone struck an apartment building in Galați, injuring a woman and child, marking the first time a Russian drone hit a populated area in the NATO member state.

A Russian drone hit an apartment building in Romania, the country's defence ministry said early on Friday, causing a fire and injuring two people. The drone crashed in the eastern city of Galati as Russia carried out attacks in Ukraine near the border, the ministry said in a statement. The Romanian General Inspectorate for Emergency Situations said the drone's entire explosive payload detonated, causing a fire on the 10th floor of the residential building. Russian drones have strayed across the border of the Nato member country a number of times during the four-year war with Ukraine, but this was the first time citizens from Romania had been hurt. Russia has yet to comment on the incident. This incident represents a serious and irresponsible escalation on the part of the Russian Federation, Romania's foreign ministry said, adding Bucharest had informed the Nato secretary general and requested measures to accelerate the transfer of anti-drone capabilities to Romania.

Latvia parliament approves new gov't after drone dispute toppled coalition Latvia's parliament has approved a new coalition government that will lead the European Union and NATO member country in the coming months after its predecessor collapsed following an argument over its handling of stray drones suspected to be from Ukraine. By a margin of 66 deputies in the 100-seat assembly, lawmakers on Thursday confirmed 47-year-old centrist Andris Kulbergs as prime minister, who will lead the Baltic nation of more than 1.8 million people until parliamentary elections on October 3. She quit after Defence Minister Andris Spruds, a member of the Progressives Party, was forced to resign over the government's handling of multiple incidents involving stray drones suspected to be from Ukraine crossing into Latvian territory. Silina accused the minister of not deploying anti-drone defences fast enough to parry two wayward Ukraine attack drones, which are thought to have been knocked off course by Russian jamming. At the time, she said Spruds had lost her trust and that of the public.