From his special vantage point as a New York Times correspondent at the State Department and White House during the Obama Administration, Mark Landler explores the relationship between Hillary Clinton and Barack Obama through the lens of foreign policy. He concludes that philosophical and generational roots explain some areas of disagreement, but also pays attention how two historic figures formed a partnership to navigate the ship of foreign policy in very rough seas. As Clinton’s chief speechwriter for many years, I especially appreciate Landler’s judicious and thorough rendering of a complicated subject, not to mention his crisp and engaging writing style.