Nancy Pelosi has been at the top of US politics for nearly 40 years - as the first, and only, woman in US history to serve as speaker of the House, she has played a central role in some of the most consequential American events of the last two decades, from the Iraq war to the US Capitol attack and Donald Trump’s impeachment.

In her latest book, “The Art of Power: My Story as America’s First Woman Speaker of the House” Pelosi gives a behind-the-scenes look at her formidable political career.

In this episode of The American Fourcast, she talks to Channel 4 News’s Matt Frei about what she’s learned about politics and power after nearly four decades in Washington, why Donald Trump is “dangerous” and what’s next for America as the Presidential election approaches.

Produced by Silvia Maresca, Calum Fraser, Shaheen Sattar, Rob Thomson.