The Canadian Prime Minister is demanding justice for the people killed when a passenger plane was gunned down last week.
176 people were killed when the plane was shot down 'unintentionally' by Iran.
Over the weekend Justin Trudeau said he was furious and was demanding compensation and justice for the families of the victims.
To explain if that's actually possible, Lawrence Herman, an International Trade Lawyer in Toronto, spoke to Leigh-Marama McLachlan.