In a recent project management class, we were discussing meeting effectiveness, and a student asked if it was ever appropriate to flat out excuse someone from a meeting for being rude or obnoxious?
Fortunately, I have not been in a situation in which I wondered if I should do that. Unfortunately, I think this student had a specific situation in mind. It’s a tough question, especially if the person who is being difficult is a peer or more senior than you.

Projects cross cultural boundaries probably as often as not anymore. How many people either go to other countries to work on projects, find themselves working with team member from other countries here in the US, or work with virtual teams that include people from other places?
Thought given to key elements of the meeting ahead of time can make for a more effective meeting. Communication of those things insures that everyone arrives at the meeting with a shared understanding of why they are there and what they need to accomplish.