What to know

• A former Ukrainian military officer has gone on trial, becoming the first person to face court over the 2022 explosions that ruptured the Nord Stream gas pipelines beneath the Baltic Sea.S1
• A Ukrainian man accused of helping to mastermind the attacks on the Nord Stream pipelines four years ago went on trial for war crimes in Germany on Wednesday, with his defence calling for the case to be dismissed. The closely watched trial – the first involvin...S2
• Supporters waving Ukrainian flags gathered outside a court in Hamburg on Wednesday, 14 October, in solidarity with a former Ukrainian army officer accused of involvement in the 2022 Nord Stream pipeline explosions in the Baltic Sea.S3