Russia’s defence ministry has admitted responsibility for a missile strike that destroyed a shopping centre in a central Ukrainian city but denied reports of civilian casualties, saying it had hit a military target. Ukrainian officials said at least 20 people died in Monday’s air strike on Kremenchuk, 25 were being treated in hospital and 40 were missing. Rescue workers are still searching the site and authorities expect the death toll to rise. The attack, which is likely to lead to one of the worst civilian death tolls in a single strike since Russia’s invasion of its neighbour in February, was...