US strike using civilian-looking aircraft raises serious laws-of-war questions

US President Donald Trump

• US airstrike used a civilian-looking aircraft in a 2025 Caribbean drug raid
• Legal experts warn disguising military planes as civilian may violate war laws
• The operation's legality and impact on international norms remain hotly debated

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In September last year, the United States carried out an airstrike on a boat it said was involved in drug trafficking in the Caribbean. Eleven people were killed. What has emerged since is not just the scale of the operation, but the method used.

According to officials briefed on the mission, the strike was conducted using a secret aircraft painted to resemble a civilian plane. The aircraft reportedly carried its weapons internally, with no visible armaments under its wings, and lacked standard military markings.

The operation was authorised under the United States Department of Defence during the tenure of Pete Hegseth, and formed part of the Trump administration’s wider campaign against suspected drug smuggling networks, the New York Times reported.

Why appearance matters under the laws of war

International humanitarian law places a strong emphasis on distinction. Combatants must clearly distinguish themselves from civilians, and military equipment is expected to be identifiable as such.

Feigning civilian status to gain a tactical advantage is prohibited. This practice, known as perfidy, is considered a war crime because it undermines the protections afforded to civilians and non-combatants.

Legal experts say the use of a civilian-looking aircraft in a lethal strike raises precisely this concern. If people on the targeted boat believed the aircraft was civilian and therefore posed no threat, that misrepresentation could have influenced their behaviour in a way that proved fatal.

What happened during the strike

Officials familiar with surveillance footage say the aircraft flew low enough to be clearly visible from the boat. After spotting it, the vessel reportedly turned back towards Venezuelan waters.

Following the initial strike, two survivors were seen clinging to wreckage and waving at the aircraft. A second strike later killed them. It remains unclear whether they understood that the initial explosion was caused by a missile attack rather than an accident.

The military later shifted to using clearly identifiable military platforms, including MQ-9 Reaper drones, for similar operations.

The administration’s legal argument

The Trump administration has defended the strikes by arguing that the United States is engaged in an armed conflict with certain transnational criminal groups. Under this interpretation, those targeted are treated as combatants rather than civilians.

That framing is highly contested. Many experts argue that criminal activity, even violent drug trafficking, does not automatically constitute an armed conflict under international law.

Even if such a conflict were accepted, the prohibition on perfidy still applies. Military manuals used by US forces explicitly warn against disguising combat assets as civilian ones during combat operations.

Why transponders do not resolve the issue

Some officials have noted that the aircraft was transmitting a military identification signal via its transponder. However, legal specialists say this does little to address the core concern.

The people on the boat would almost certainly not have had the equipment needed to detect or interpret such signals. What matters, experts say, is what was visible to those being targeted.

Broader concerns inside the military

Questions about the legality of the aircraft’s appearance have reportedly been raised in closed-door briefings to Congress. The issue has not been discussed publicly because the aircraft itself remains classified.

The episode has also renewed scrutiny of the administration’s broader approach to legal oversight. Donald Trump and Hegseth have both been critical of military lawyers, and senior judge advocate generals were removed early in the administration.

Why this matters beyond one strike

At least 123 people have been killed in dozens of similar boat attacks. The dispute is not only about one aircraft or one operation, but about whether established legal safeguards are being weakened in the pursuit of security objectives.

For critics, the use of civilian-looking military platforms risks eroding one of the most basic principles of the laws of war. For supporters, the administration insists the operations were lawful and necessary.

The unanswered question is whether those two positions can be reconciled without further damage to international norms that the US has long claimed to uphold.