A Canadian attempting to drive Ukrainians displaced by the war to safety says Russian shelling has trapped him in the city of Chernihiv for three days as food and water supplies dwindle. Speaking Friday from a bomb shelter in the badly damaged city in northern Ukraine, Lex Brukovskiy said he feels the shelling is an immoral tactic targeting innocent people trying to escape the conflict. “It’s dirty. It’s unfair because what the Russian army is doing is just taking civilians hostage,” said Brukovskiy, a lobster fisherman from Nova Scotia who travelled to his native Ukraine to offer help two weeks ago. “They’re not fighting army with army. They’re setting their army against regular people.” He is driving a van with about a dozen passengers, including women, children and the elderly, that is part of a humanitarian convoy trying to ferry people to safety in the western part of the country. …