They must be held accountable by the families. Money isn't going to bring them back, but it's all they have at this point. Considering how big and horrific this story is, they should make good on this.
That comes later, Right now Iran must be held accountable by the countries whose citizens were MURDERED by the mullah-regime currently being defended by leftards worldwide. I suspect loony-left Canadians have been blaming Trump for Iranian acts of terror. They will now hypocritically change their tune and demand vengeance.
The problem is, what vengeance can Canada strike?
I recall a few years ago when Harper was in power and he talked a great game about confronting former Iranian President Mahmoud with some sort of sanctions or ban on some Iranian product or what have you, he just shrugged while at the UN and said with complete honesty, "we don't even notice. We hardly have any business relations with Canada". He wasn't angry or even arrogant, it was a matter-of-fact, complete indifference.
Things haven't really improved much since then. There are some in Canada suggesting that this could help build a bridge with Canada and Iran for political relations. It's an odd position to present with the timing, but when you are a lightweight like Canada has become the last 25 years or so due to complete fault of our own, I guess you're happy for any friends.