According to

After starting out fairly civil, the divorce negotiations between Elin Nordegren and Tiger Woods have turned extremely testy. I’ve learned Elin is balking at a lifetime confidentiality clause preventing her from writing a book or doing any interviews related to the collapse of the couple’s marriage. In addition, I’m hearing Nordegren is ramping up her financial demands — to an estimated $750 million package — and wants full custody of their children.

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