I'm not quite sure what you're thinking of in terms of “other international” cooperation. Most of that in fact is fostered through the IOC. They are, after all, the international body dealing with the games and have a lot of experience in how to manage an Olympic games and some of the issues that come up. They've actually been quite useful in some of the conversations we've had with them.
In terms of other international bodies, really, the focus is North American at this point. Apart from visiting some other Olympic sites and talking to those who have held other Olympics, there are not a whole lot of other parties to whom we've ventured in looking for best practices for the Olympics.