Joe Arpaio: As sheriff of Maricopa County for more than 24 years, he built a nationwide reputation for a tough attitude to law enforcement. Photograph: Suzanne Lynch

Joe Arpaio remembers exactly where he was when he learned he had received a presidential pardon from US president Donald Trump. “It was my wife’s bir(...)

Former US Secretary of State Rex Tillerson. Photograph: Jonathan Ernst/AFP/Getty Images

Rex Tillerson’s sacking is the latest in a series of notable firings and resignations from president Donald Trump’s White House since he took office o(...)

Author Michael Wolff: nearly everyone in the White House who spoke to him for his book, Fire and Fury, thought someone else had approved their participation. Photograph: Brendan McDermid/Reuters

Author Michael Wolff’s pitch to the White House to win co-operation for his book included a working title that signalled a sympathetic view and a coun(...)

US president Donald Trump. He sees the office much as he did the night of his stunning victory – as a prize he must fight to protect every waking moment, with Twitter as his Excalibur. Photograph: Doug Mills/The New York Times

Around 5.30 each morning, President Donald Trump wakes and tunes into the television in the White House’s master bedroom. He flips to CNN for news, mo(...)

Donald Trump: bearing grudges is what his supporters do best. They want a tale of resentment and revenge. Photograph: Eric Thayer/New York Times

The word “character” has two opposite meanings. On the one hand it suggests the inner essence of a person, the fixed truth behind all surface impressi(...)