If you had to make a list of things that you'd think a CEO would be responsible for, this sure seems like one of them.
If they've got enough people to send in their place, then they also have enough people to run the company while they do the things like this.
It's not like it's just any country's whim, it's a group of G7 countries conveniently meeting next door.
If every single little country was calling on them all the time, then yeah maybe, but this seems like one of those "pick and choose" situation where you should send the CEO and Founder.