preparing for cross-cultural work team

I am now part of a multi-cultural strategic team that is tasked with finding growth opportunities for the company by determining how to introduce products into new markets. We have a really talented group, but our initial organizing meeting in Chicago turned out to be problematic in terms of how the group interacted with each other. I think the discomfort in the group was due in large part to a couple of team members from our London office who are Muslim.