Ukrainian President Volodymyr Zelensky meets Balkan leaders at a summit in Dubrovnik, Croatia, where he says "we must ensure that our unity in Europe remains as stable as possible". The meeting is the third 'Ukraine-Southeast Europe" summit and comes as Ukraine pushes for more military aid, with its army struggling to repel Russian advances. "Russia is avoiding honest diplomacy," Zelensky says, adding that Ukraine's plan for an end to the war is "a plan for reliable stability." IMAGES AND SOUNDBITES