close Kate Middleton is the monarchys secret weapon: author Christopher Andersen, author of "Kate!," tells Fox News Digital that the Princess of Wales’ modern approach, family values and "soft power" make her a vital asset to the royal family and the UK. NEW You can now listen to Fox News articles! After cancer, Kate Middleton has emerged stronger than ever and has become the one person saving the monarchy. The claim was made by multiple royal experts who spoke to Fox News Digital, praising the