The Profumo Affair was a political scandal in the United Kingdom during the early 1960s. It involved John Profumo, the Secretary of State for War, who had a brief affair with Christine Keeler, a model and showgirl. The scandal erupted when it was revealed that Keeler was also involved with a Soviet diplomat, raising concerns about national security. The affair led to Profumo's resignation in 1963 and damaged the reputation of the Conservative Party. The scandal highlighted issues of morality in politics and the potential risks of personal relationships affecting government affairs, making it a significant event in British history.