Utilize the input text as a context reference, choose the right relationship between Rebekah Brooks and Editor-in-Chief from the options. Options: product/material produced, manufacturer, distributed by, industry, position held, original broadcaster, owned by, founded by, distribution format, headquarters location, stock exchange, currency, parent organization, chief executive officer, director/manager, owner of, operator, member of, employer, chairperson, platform, subsidiary, legal form, publisher, developer, brand, business division, location of formation, creator.

New York, NY - (September 2, 2015) - News Corp today announced leadership changes at News UK, with the appointment of Rebekah Brooks as Chief Executive Officer, David Dinsmore as Chief Operating Officer, and Tony Gallagher as Editor-in-Chief of The Sun, Britain's largest selling daily newspaper.

Answer: position_held