If you have a committee that looks into this area of governance, I would hope that all political parties could agree on what our national interests are and what needs to be put in place. Is it necessary to have a chair? Could you survive with co-chairs and an equal balance between parties in opposition? Perhaps that sort of approach might be another way of looking at it.
In terms of the difference between review and oversight, traditionally we've looked at the whole bailiwick of oversight in terms of after-the-fact review. This isn't the way it actually happens. If you're looking for something, on the estimates, for example, you need to know what it's going to be used for so you need a form of scrutiny that actually informs you about that future event. If you're putting in place military equipment, for example, you need to know what the costs are ahead of time, and whether it's the best option.
You have one of the innovations of the last government, which was to introduce the parliamentary budget officer. I think that was a very promising development. There are avenues that do need to be done first or ahead of time, as well as after the fact.