At the door of the evacuation bus in the centre of the southern Ukrainian port city of Mykolaiv, Lyubov Verba squeezes the arm of her daughter Diana as her son Vyacheslav, 12, looks on.
It is a brief and poignant moment. Lyubov is tired and drawn. Unable to sleep under the Russian shelling that has targeted the city since the beginning of the war in February, she has developed a tremor.
