Yes, the closest verified case is Israel's 1954 Lavon Affair (Operation Susannah). As a close US ally, Israeli military intelligence recruited Egyptian Jews to plant timed bombs in US-owned libraries, British theaters, cinemas, and post offices in Cairo and Alexandria. The false flag aimed to blame Egypt's Muslim Brotherhood, communists, or nationalists, creating chaos to undermine Nasser and pressure Britain to keep troops in the Suez Canal zone—countering US-backed Egyptian nationalism and withdrawal talks. A bomb detonated early in one operative's pocket; he was caught, leading to arrests of the cell. Two were executed by hanging, others imprisoned (some later released in exchanges). Israel initially denied involvement but later honored survivors in 2005. It strained US-Israel ties short-term and factored into the 1956 Suez Crisis. No direct US war entry resulted, but it targeted American sites to shift blame. No other confirmed cases match the full criteria of a caught ally operation explicitly to pull the US into wars.
