When Hillary Clinton stepped down as U.S. Secretary of State secretary of state last month, she had logged nearly one million miles on trips around the world.
Yet Clinton's policy legacy is less quantifiable; and her political future is up in the air.
Foreign correspondent Kim Ghattas accompanied Clinton on hundreds of thousands of those miles, as a member of the traveling press corp.
Ghattas’ new book, "The Secretary: A journey with Hillary Clinton from Beirut to the heart of American power" is an insider's account of Clinton's diplomatic whirlwind.
In the video above CNN’s Hala Gorani asks Ghattas what she sees in Clinton’s political future.