An Indian Navy warship and a Pakistani Navy patrol vessel collided in the North Arabian Sea on 15 September 2026, triggering a sharp diplomatic exchange between the two countries. According to India, the Pakistani corvette PNS Hunain approached an Indian warship at high speed during what India described as a routine surveillance mission in international waters, grazing the vessel before sustaining damage and returning to port; no casualties were reported. Both sides summoned each other's chargés d'affaires and lodged formal protests, with Pakistan characterising the Indian vessel's manoeuvres as a violation of its Exclusive Economic Zone and of a 1991 bilateral agreement on advance notice of military activities, while India countered that Pakistan's conduct was "unsafe and unprofessional" and itself breached the same accord. The incident heightens tensions between the two nuclear-armed neighbours, which fought a brief but serious military conflict in May 2025 following an attack on tourists in Kashmir.