The Battle of Marawi (Filipino: Labanan sa Marawi), also known as the Marawi siege (Filipino: Pagkubkob sa Marawi) and the Marawi crisis (Filipino: Krisis sa Marawi) was a five-month-long armed conflict in Marawi, Lanao del Sur, that started on 23 May 2017, between Philippine government security forces and militants affiliated with the Islamic State of Iraq and the Levant (ISIL), including the Maute and Abu Sayyaf Salafi jihadist groups.The battle also became the longest urban battle in the modern history of the Philippines.
