A friend of mine started an international business group a while back called IBCircle. I recently had lunch with her to catch up and learned more about it. This is a really great group with an impressive and interesting list of members. They do fun events to get people networking and thinking about global issues. They started in Colorado, but have also created a chapter in Arizona.
I have missed the last couple of events having to be traveling for work, but hopefully I can make one soon. One of their big advantages is the foreign expertise within the group. If you want to know what it's like to be an expat in Dubai, or need to know of a good personnel lawyer in France, the connections within this group will point you in the right direction. Check it out if you're at the executive level and have an interest in international business.