Watch: BBC follows Ukraine's Operation Vivaldi pushing Russia back on frontline To play this video you need to enable JavaScript in your browser. Watch: BBC follows Ukraine's Operation Vivaldi pushing Russia back on frontline Close Deep inside an underground bunker in eastern Ukraine, commanders monitor the battlefield through a live video feed as a Ukrainian drone intercepts a Russian surveillance drone. The footage shows the Ukrainian drone hovering above its target, before dropping a net and dragging it from the sky. The interception is part of Operation Vivaldi, a Ukrainian counter-offensive that Kyiv says has recaptured 277 sq km (106 square miles) of territory in the eastern Donbas region in recent months. But Ukraine says new restrictions on Starshield, the military version of Elon Musk's Starlink satellite network, are threatening its drone operations.

To play this video you need to enable JavaScript in your browser. Figure caption, Watch: BBC follows Ukraine's Operation Vivaldi pushing Russia back on frontline Cigarette in one hand, radio in the other, one of them calls in their own drone to bring it down and warns the soldiers below of the threat. The men are dangerously exposed, on the long walk across open ground from their front line positions. They are being replaced after three months forcing the Russians back. This is part of Operation Vivaldi, a Ukrainian counter-offensive which they say has liberated 277 sq km (106 square miles) in the eastern Donbas region in recent months.

Russia's State Duma elections will be held in occupied territories of Ukraine including Donetsk, Luhansk, Kherson, and Zaporizhzhia without OSCE election observers.

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.

On Russian state TV a news bulletin shows images of a five-storey building reduced to rubble. Teams of rescuers are sifting through debris. On a severely damaged façade there's a sign: What happened here early on Friday has sparked Russian accusations, Ukrainian denials, an emergency session of the United Nations Security Council and vows of retribution by the Kremlin. The town of Starobilsk is in Russian-occupied eastern Ukraine: in the Luhansk region which Moscow claims to have annexed. Russian officials accuse Ukraine of a carrying out a drone attack on the college dormitory.

Russia's Putin vows retaliation after accusing Ukraine of hitting student dormitory Russian President Vladimir Putin has promised retaliation after accusing Ukraine of carrying out a deadly attack on a student dormitory in an occupied part of eastern Ukraine. Six people were killed and 39 injured in the overnight strike in the town of Starobilsk, Luhansk region, Putin said. Another 15 people were missing. Ukraine's military said it hit the headquarters of Russia's elite Rubicon drone military unit in Starobilsk. It did not say whether it was the same building as the one identified by Russia.

Could Ukraine hold a presidential election right now? Will Europe use frozen Russian assets to fund war? How can Ukraine rebuild China ties? 'Ukraine is running out of men, money and time' At least two people were injured after Russian forces launched a drone and missile attack on Kharkiv, Ukraine's second-largest city, Mayor Ihor Terekhov said. The attack also damaged apartment buildings, a school, and a kindergarten, he added.

Apart from the snow and the temperature Greenland does not have much in common with the Swiss alps. But the fight for the future of the island looms over the gathering of world leaders and businesses at the World Economic Forum (WEF) this week. Indeed the timing of Donald Trump's extraordinary threat must have had in mind this meeting. And that is beyond strange given the views of his base. Last year, he beamed himself into the WEF from the White House, appearing before an audience of largely bewildered European executives just two days after his inauguration.