Suicide Bombings Worldwide in 2019: Signs of Decline Following the Military Defeat of the Islamic State [open pdf - 850KB]
From the Document: "Suicide bombings in 2019, despite a sharp decline in number from the previous year, remained one of the most effective tactics available to terrorist groups. The drop in number is in keeping with an ongoing (albeit more modest) decline seen in recent years, but the figures of 2019 can be attributed to the final military defeat of the Islamic State. Therefore, while the Islamic State and its affiliates - the organizations that since 2015 have committed the most suicide bombings - remain the groups primarily responsible for suicide bombings, the actual number of attacks plummeted."
INSS Insight No. 1244; Institute for National Security Studies Insight No. 1244
Institute for National Security Studies: http://www.inss.org.il/