<p><span class="m_first-letter m_first-letter--flagged">T</span>he daughter in law of King Salman of Saudi Arabia is being sued for &pound;6 million after allegedly failing to pay fees on lucrative property deals, including the sale of her country estate to a Russian billionaire.</p> <p>A senior confidante to the Saudi royals accuses Princess Nouf bint Khalid bin Abdullah Al Saud of withholding fees due to him for property deals he brokered in London and the Home Counties.</p>