The Roaring Lion is a black and white photographic portrait of a 67-year-old Winston Churchill as Prime Minister of the United Kingdom.

[4] Churchill is particularly noted for his posture and facial expression, likened to the wartime feelings that prevailed in the UK—persistence in the face of an all-conquering enemy.

Churchill refused, so just before taking the photograph, Karsh quickly moved toward the prime minister and said, "Forgive me, sir," while snatching the cigar from his subject's mouth.

[3] Following the taking of the photo, Churchill stated, "You can even make a roaring lion stand still to be photographed," thus giving the picture its notable name.

[6] USC Fisher Museum of Art described it as a "defiant and scowling portrait [which] became an instant icon of Britain's stand against fascism.

[11] In 2019, the Royal Canadian Mint, with permission from the Karsh estate, released a 10 oz (280 g) pure silver CA$100 face value coin.

[8] The original negative and the vast collection of Karsh's images were donated by his estate to the Library and Archives Canada in 1992.

[12] In 1998, an original signed print of the image was installed in the reading room of the Fairmont Château Laurier hotel in Ottawa, where Karsh and his wife Estrellita had lived, and where he operated his studio, from 1972 until 1992.

[13] Jeffrey Wood, 43,[14] from Powassan, Ontario, was arrested on April 25, 2024, and charged with multiple offences relating to the theft of the print.