That's a good question.
This of course gets us into the State Immunity Act. The State Immunity Act is an immunity for states and not individuals, but it's been interpreted to apply to individuals who are acting for the state. The courts have said that if you allow a lawsuit against a president or a foreign affairs minister or so on, it's in effect suing the state.
I, and others, have proposed exceptions to the State Immunity Act. There are some exceptions now, but they don't cover this sort of situation. I think there should be an exception for genocide, incitement to genocide, and torture. There's been a bill in the Senate to have an exception for terrorism. Actually, the Bloc at one time proposed an exception for torture, but it never went anywhere. I think it's something I would like to see. The State Immunity Act is too blanket right now.
The United States allows for lawsuits for international crimes for terrorist designated states, and they've designated Iran. In the United States these sorts of lawsuits are possible, but in Canada they're not. I don't see why they shouldn't be. I would encourage Parliament to look at opening up the State Immunity Act a bit to allow for these sorts of lawsuits.