Around the world, people were taken aback when the populist candidate, a real estate developer and reality TV show star called Donald Trump, was elected as the 45th President of the United States. Here Tony Schwartz, Trump's co-author on his bestselling book, The Art of the Deal, talks us through how that happened and why Trump is so mesmerising, even to those who oppose him.

On January 20th, 2021, Joe Biden became the 46th President of the United States. Here Ronald A. Klain, the veteran lawyer who is once again serving as Biden's chief of staff, recommends books that show the man behind the public persona including his love of Irish poetry, the string of terrible personal tragedies that have affected his life and career, and his leading role in blocking a Supreme Court appointment that would've decimated abortion rights.

From the annexation of Texas to the UN's Commission on Human Rights, first ladies have played a key role in the history of the United States. Historian Carl Sferrazza Anthony recommends five engaging books about the tumultuous lives of some of the country's first ladies.

In contrast to many other countries, the secretaries who serve in the United States cabinet aren't chosen from among the country's elected officials but entirely reflect the president's personal choices. Here, presidential historian Lindsay Chervinsky, author of The Cabinet: George Washington and the Creation of an American Institution, talks us through the role of the cabinet and recommends which books to read to understand more about it.