Ukraine's recapture of the city of Izyum has brought multiple allegations of atrocities under Russian occupation. Among the accounts emerging is that of a group of Sri Lankans held captive for months. Here, they tell their story. "We thought we would never get out alive," says Dilujan Paththinajakan. Dilujan was one of seven Sri Lankans captured by Russian forces in May. The group had just set out on a huge walk to safety from their homes in Kupiansk, north-eastern Ukraine, to the relative safety of Kharkiv, some 120km (75 miles) away. But at the first checkpoint they came across, they...