Glenn Kessler (journalist) neoconservative propaganda but his reporting turned out to be correct and apologies were later offered. In a lengthy article, Kessler also revealed the Bush administration's internal decision-making that led to the Iraq war. He traveled with three different Secretaries of State – Colin Powell, Condoleezza Rice and Hillary Clinton – and for several years wrote a blog about his experiences on those trips. An article he wrote on apparent tensions between Rice and Defense Secretary Donald Rumsfeld during a 2006 trip to Iraq was later denounced by Rumsfeld as "just fairly typical Washington Post stuff." Kessler joined "The Washington Post"
Known and Unknown: A Memoir are highlighted. He describes being in the Pentagon when the hijacked American Airlines Flight 77 slammed into it on September 11, 2001. He recounts staying at his post amid the rubble and groping to determine the significance of the attack. He also remarks that the targeted sectors of the Pentagon were undergoing refurbishment (with many offices unoccupied) and thus many lives were spared. Rumsfeld discusses the longtime problems of his son, Nick, with drug addiction. He recalls when his son checked into a rehab clinic shortly after 9/11, and Rumsfeld, overcome with emotion, breaks down in a meeting with Bush