Why did the man who once opposed appeasement become Britain's most failed prime minister?

History · Published 30 September 2026 Swipe more like this →

In short: Anthony Eden was a decorated war veteran and skilled diplomat who spent decades preparing for the premiership. Yet, his brief tenure as prime minister in the 1950s collapsed in disgrace. His downfall, triggered by the Suez Crisis, marked a historic turning point for British influence on the global stage.

Born in 1897 into the landed gentry, Anthony Eden was shaped by the trauma of the First World War. He served as a young officer on the Western Front, earning the Military Cross for a daring trench raid in 1916. Having lost two brothers to the conflict, he emerged with a deep-seated aversion to war and a conviction that peace must be preserved through international cooperation. This perspective defined his early career, where he gained a reputation as a rising star within the Conservative Party, eventually becoming foreign secretary at age 38.

Eden’s political identity was forged in his opposition to the appeasement policies of the 1930s. He famously resigned in protest against Neville Chamberlain’s approach to Mussolini’s Italy. However, his later premiership, which began in 1955 after serving as Winston Churchill’s deputy for nearly 15 years, proved disastrous. In 1956, Eden orchestrated an Anglo-French military response to the Suez Crisis, failing to anticipate the depth of American opposition to the operation. The resulting diplomatic isolation was widely viewed as a humiliating setback that signaled the end of British dominance in the Middle East.

The failure was compounded by accusations that Eden had misled the House of Commons regarding the extent of his collusion with France and Israel. Suffering from poor health and a shattered reputation, he resigned in 1957. While some modern biographers have attempted to rehabilitate his image, Eden remains frequently cited as one of the least successful British prime ministers of the 20th century. His career serves as a stark study in how a lifetime of diplomatic experience can be undone by a single, catastrophic miscalculation of international power dynamics.

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