How a botched raid on a terrorist leader triggered the Philippines' longest urban battle.
In May 2017, Philippine security forces launched a surgical operation to capture an Islamic State-affiliated commander. Instead, they stumbled into an entire city of armed militants. The resulting five-month siege of Marawi transformed a local counter-terrorism effort into a brutal urban war, reshaping the nation's security landscape forever.
The conflict began on May 23, 2017, when government forces attempted to arrest Isnilon Hapilon, a high-ranking leader of the Abu Sayyaf group and the designated 'emir' of Islamic State forces in the Philippines. Intelligence reports had placed Hapilon in Marawi, where he was reportedly consolidating power with the Maute group. The operation quickly spiraled out of control when militants opened fire, forcing the military into a desperate, large-scale engagement that lasted until October 2017.
The militants, which included foreign fighters from countries like Malaysia, Indonesia, Saudi Arabia, Yemen, and Chechnya, aimed to establish a provincial Islamic State territory. They seized critical infrastructure, including Marawi City Hall, Mindanao State University, and a local hospital, while burning churches and schools. The fighting was characterized by intense urban warfare, including the use of child soldiers by the Maute group and the tragic death of eleven soldiers in a friendly-fire air strike. By the time the government declared the city liberated on October 17, 2017, the city had been devastated, and over 90 percent of its 200,000 residents had been displaced.
The siege highlighted the long-standing, complex struggle against extremism in the Philippines. While the government had previously downplayed the presence of Islamic State-linked groups, the scale of the Marawi crisis proved the threat was far more entrenched than officials had admitted. The battle forced a major reassessment of national security strategies, as the military grappled with the reality of foreign-backed insurgency and the difficulty of clearing militants from dense urban environments. The conflict ended officially on October 23, 2017, following the deaths of key leaders Omar Maute and Isnilon Hapilon.
The aftermath left Marawi in ruins and raised urgent questions about how such a significant militant force had managed to occupy the city. The involvement of foreign fighters and the use of human shields underscored the brutal tactics employed by the insurgents. Ultimately, the siege remains a defining moment in the Philippines' modern history, marking the longest urban battle the country has faced since 1945.
Source: Siege of Marawi
