Afghanistan says at least 400 people have been killed in a Pakistani airstrike on a drug rehabilitation hospital in Kabul on Monday night, with potentially hundreds more wounded. Pakistan has denied deliberately targeting the health-care facility. In a statement on X, the Pakistani Information and Broadcasting Ministry said the strikes “precisely targeted military installations and terrorist support infrastructure including technical equipment storage and ammunition storage of Afghan Taliban”.Attacks on health-care facilities are surging worldwide.On March 14, an Israeli airstrike hit a health-care facility in Lebanon, killing 12 doctors, nurses and paramedics. The strike brought the number of health-care workers killed in Lebanon in recent days to 31.Since early March, the World Health Organization (WHO) has verified 27 attacks on health-care facilities in Lebanon alone, as Israeli strikes in Lebanon and joint US–Israeli operations in Iran have intensified.The Office of the High Commissioner for Human Rights (OHCHR) and the WHO condemned these attacks as violations of international law.So, what laws protect medical facilities, staff and patients during conflict? And do they lose this protection if facilities are used to shelter combatants?What the ‘laws of war’ say about protecting hospitalsInternational humanitarian law contains detailed rules to protect medical personnel, facilities and the sick and wounded during armed conflict.Under these “laws of war”:medical personnel, including doctors, nurses and paramedics, must be respected and protected while performing their dutiesthere are special protection for ambulances and transport used exclusively for medical purposesthese protections extend to the wounded and sick in their care. This includes enemy fighters who require treatment and are no longer taking part in hostilitiesimpartial humanitarian organisations must be allowed to provide medical assistance. Consent to their work cannot be refused arbitrarilymedical facilities must display the distinctive protective emblems of the Red Cross, Red Crescent or Red Crystal. Medical personnel must carry identification and armlets displaying these emblemsmisusing these symbols to shield military operations is prohibited. Doing so may amount to perfidy, a type of deliberate deception which is a war crime under international lawdeliberately attacking medical personnel or facilities displaying these emblems can also constitute a war crime. Damage caused by US and Israeli attacks on Shahid Motahhari Hospital in Tehran. Anadolu/Getty Where did these rules come from?The laws protecting medical services in war emerged in response to the enormous suffering witnessed in 19th and 20th-century conflicts.The first treaty protecting wounded soldiers and medical personnel dates back to 1864, when states adopted the original Geneva Convention.Today, the 1949 Geneva Conventions, their Additional Protocols, together with a body of customary international law, form a near-universal legal framework binding all parties to conflict. This includes non-state armed groups.These rules require warring parties to respect and protect medical personnel, facilities and the wounded and sick in all circumstances.Why are attacks on health care increasing?In January, Médecins Sans Frontières (MSF) reported attacks on medical facilities and personnel had reached unprecedented levels around the world. In 2025 alone, there were 1,348 attacks on health-care facilities, double the number reported in 2024.The law itself has not changed. But warfare has. Recent conflicts in South Sudan, Ukraine, Gaza, Iran and Lebanon are taking place in densely populated urban environments. Armed groups operate within complex civilian settings, often near hospitals and clinics. Read more: Attacks on health care during war are becoming more common, creating devastating ripple effects This has shifted the narrative used by some warring parties. What were once described as “mistaken attacks” are now frequently justified on grounds of military necessity. States often claim insurgents are exploiting hospitals or ambulances to gain military advantage. Israel, for example, has accused Hezbollah and Hamas of using medical infrastructure for military purposes.Can hospitals lose their protection if fighters are hiding inside?Yes. Hospitals can lose their special protection if they are used, outside their humanitarian role, to harm the enemy.However, the law sets a very high threshold for this.Medical personnel may carry light weapons for self-defence. Armed guards may be present to protect the facility. The presence of wounded fighters receiving treatment does not change this – protections still apply.Protection may be lost only if hospitals are used for activities such as:launching attacksserving as an observation poststoring weaponsacting as a command or liaison centresheltering able-bodied combatants.Even then, in cases of doubt hospitals must be presumed protected.Importantly, verifying a hospital is being misused does not give parties a free licence to attack.Before launching an attack on a compromised medical facility, international humanitarian law requires a warning to be issued, and reasonable time allowed for the misuse to stop.If the warning is ignored, the attacking party must still comply with the core principles of international humanitarian law:ProportionalityThe expected military advantage must be weighed against the humanitarian consequences of the attack. This includes long-term impacts on health-care services. If the expected civilian harm would be excessive, the attack must be cancelled.PrecautionsAll feasible precautions must be taken to minimise harm to patients and medical staff. This may include facilitating evacuations, planning for disruption to medical services, and helping restore health-care capacity after the attack.Even when a facility loses protection, the wounded and sick must still be respected and protected. Read more: Health-care workers should not be a target. In Gaza, their detention and death affect the entire population Are attacks on health care becoming normalised?The UN Security Council, WHO, MSF and the OHCHR have expressed concern attacks on medical personnel and facilities – and the lack of accountability for them – are becoming dangerously normalised. The legal framework protecting hospitals and health-care workers already exists. States and armed groups must disseminate the law and train their military forces. National legal systems are expected to investigate and prosecute those perpetrating war crimes against the wounded and sick, medical personnel and their facilities, or misusing protective emblems for military advantage.In practice, however, investigating attacks during active conflict is extremely challenging. Territorial states are often unwilling or unable to pursue prosecutions.Can we reverse this trend?Open-source investigative groups such as Forensic Architecture, Bellingcat, Mnemonics and Airwars now play a growing role in preserving satellite imagery, geo-location data, and videos uploaded to social media. These allow independent fact-finding missions to conduct credible investigations. They may pursue accountability even when territorial states are unwilling or unable to do so. Without such accountability, places meant to save lives during conflict may increasingly become targets themselves.Shannon Bosch does not work for, consult, own shares in or receive funding from any company or organisation that would benefit from this article, and has disclosed no relevant affiliations beyond their academic appointment.