Explainer
Explosive Weapons in Populated Areas: Why Cities Face Such High Risk
Artillery, rockets, mortars, large bombs and missiles can cause wide-area blast and fragmentation effects that are especially dangerous in populated areas.
Reviewed 18 September 2026. This is an evergreen explainer; case-specific legal findings should be checked against the newest authoritative source.
In short: Artillery, rockets, mortars, large bombs and missiles can cause wide-area blast and fragmentation effects that are especially dangerous in populated areas.
Explosive weapons are munitions whose primary effects come from blast and fragmentation. In cities and other populated areas, weapons with wide-area effects can kill and injure civilians far beyond the intended point of impact and damage the infrastructure on which entire communities depend.
What creates a wide impact area?
A weapon may affect a wide area because it has a large explosive yield, is inaccurate, disperses multiple munitions, or is delivered in salvos that spread effects across space. Artillery, rockets, mortars, missiles and large aircraft bombs can fall into this concern depending on their characteristics and use.
Urban harm is more than the first blast
Damage to electricity, water, hospitals, communications and roads can produce “reverberating effects.” A strike that destroys a power substation may interrupt pumping of clean water or hospital services for a much larger population. These indirect consequences are central to humanitarian analysis of urban warfare.
IHL still governs each attack
The use of explosive weapons is regulated by distinction, proportionality and precautions. The ICRC has warned that explosive weapons with wide-area effects are very likely to have indiscriminate effects when used in populated areas and advocates avoiding such use unless sufficient mitigation measures can reduce the risk.
Not every explosive weapon is banned
The term describes a broad family of weapons, not a single treaty-prohibited category. Some specific weapons are prohibited or restricted by separate treaties; many others are lawful weapons whose use can still be unlawful in particular circumstances.
Population density changes risk
The same artillery system used against an isolated military objective in open terrain and against a target in a dense residential district creates very different civilian-risk profiles. Legal obligations require decision-makers to account for those circumstances.
Why aftermath reporting should include services
Counting fatalities and damaged buildings is not enough. Good reporting tracks water, electricity, health care, sanitation, displacement and access because urban infrastructure is interconnected.
Frequently asked questions
Are explosive weapons banned in cities?
There is no blanket treaty ban on all explosive weapons in populated areas, but IHL strictly regulates their use and wide-area effects create serious risks.
What are reverberating effects?
They are downstream consequences, such as loss of water or health services after infrastructure is damaged.
Is every artillery strike indiscriminate?
No. Legality depends on targeting, weapon effects, circumstances and compliance with IHL.