Vjeruje se da al-Kaida stoji iza nekoliko značajnih napada u Istanbulu, između ostalog četiri kamiona-bombe u novembru 2003, ciljanja Britanskog konzulata, turskog sjedišta banke HSBC i dviju sinagoga, pri čemu je ubijeno 57 i ranjeno na stotine ljudi.
Al-Qaeda is believed to have been behind several high-profile attacks in Istanbul, including four truck bombs in November 2003, targeting the British Consulate, the Turkish headquarters of HSBC bank and two synagogues, killing 57 people and wounding hundreds.