Actually, I think those are pretty good answers by Romney.
He is obviously rich and has worked hard and long to get there. He now has spread investments into many areas, has managers looking after those investments, and said investments include foreign ones. Given likely world growth trends by area, it is not surprising he has assets in, say, BRIC countries, maybe depressed european countries, etc. He’d be dumb to not diversify his investments and hire smart people to manage them, and I’d rather not have a dumb guy as president. I am also OK that he now hires others to manage his financial affairs and doesn’t know the details of everything–spend time instead on getting ready to be president, should that happen.