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RADIOACTIVE TSUNAMIS: NUCLEAR TORPEDO DRONES AND THEIR LEGALITY IN WAR

SEPTEMBER 4, 2023, By Raul (Pete) Pedrozo, Center for International Maritime Security

Introduction 

Russia and North Korea are both fielding a novel type of naval weapon – nuclear-armed torpedo drones. These new weapons introduce a variety of strategic and operational challenges that further complicate a worsening threat environment. They also pose critical legal questions about whether their intended concepts of operation are lawful. These weapons have a fearsome potential to weaponize the maritime environment, and precise questions of their legality should be resolved in order to dissuade their proliferation. 

North Korea and Russia’s Doomsday Torpedoes

On July 28, North Korea displayed a new nuclear-armed drone torpedo at the 2023 Victory Day Parade in Pyongyang. Although its official classification is unknown, the new weapon is likely a Haeil-class drone torpedo. The nuclear torpedo drone is approximately 52 feet long and 5 feet in diameter, has an estimated range of about 540 nautical miles, and can be fitted with a conventional or nuclear warhead. It could therefore be used against targets in both South Korea and Japan. ……………………………………………..

The nuclear-armed underwater drone can be used to attack coastal naval installations or cities with little or no warning, providing North Korea with a strategic nuclear weapons delivery option that is difficult to detect and defend against. 

The Haeil-class drone torpedo is similar to (but smaller than) the Russian Poseidon, an intercontinental, nuclear-powered, nuclear-armed autonomous torpedo that was first revealed by the Russian Navy in 2015. The Poseidon (also known as Kanyon or Status 6) can reportedly operate at speeds of around 70-100 knots and at depths of around 3,300 feet, which means it can outrun and out dive any conventional torpedo……………………………………………………….

These drone torpedoes can be armed with up to a 100-megaton nuclear warhead, but their primary method of destruction is less about directly impacting targets. Instead, they focus on weaponizing the immediate aftereffects of nuclear detonations in the maritime environment. These nuclear torpedo drones are designed to trigger a radioactive tsunami-like ocean swell that destroys coastal cities and renders them uninhabitable, potentially resulting in large-scale displacement and millions of deaths. The legality of this concept of operations deserves closer scrutiny.

Legal Means and Methods of Warfare

Generally, the legal right of the belligerents to adopt means or methods of warfare during an international armed conflict is not unlimited (AP I, art. 35; HR, art. 22; Newport Manual, § 6.1). Specifically, a belligerent does not have the unlimited right to inflict superfluous injury or unnecessary suffering on the opposing belligerent (HR, art. 23; Newport Manual, § 6.1). Weapons law “regulates which weapons and means can lawfully be used during an armed conflict,” and is comprised on both customary international law and treaties (St. Petersburg Declaration; Newport Manual, § 6.2). The customary international law principle of distinction and the prohibition of unnecessary suffering regulate the legality of the means of warfare (Newport Manual, § 6.2). Weapons law is also codified in treaties, such as the Environmental Modification (ENMOD) Convention and Additional Protocol I (AP I) to the 1949 Geneva Conventions.

Damage to the environment is a concern. AP I places restrictions on weapons that “are intended or may be expected to cause widespread, long-term, and severe damage to the natural environment (AP I, art. 35(3); Newport Manual, § 6.3).” AP I further provides that the belligerent shall take care “in warfare to protect the natural environment against widespread, long-term and severe damage,” which includes a prohibition of the “use of methods or means of warfare which are intended or may be expected to cause such damage to the natural environment…” that prejudices the health or survival of the civilian population (AP I, art. 55(1); Newport Manual, § 6.3). The International Committee of the Red Cross interprets “long-term” to include damage over a period of decades (ICRC Commentary to AP I, ¶ 1453(c))……………………………………………………………………………………………………………………………………………………………………………………………………………………….

Conclusion

Armed with multi-megaton nuclear warheads, these torpedo drones will be detonated along an adversary’s coast to create a powerful radioactive tsunami to destroy coastal cities and naval bases. Given that the concept of operations for these new weapons might unlawfully modify and weaponize the natural environment, both the North Korean Haeil and Russian Poseidon torpedo drones are likely unlawful weapons per se under the law of armed conflict.

The unleashing of environmental forces in such a manner is contrary to the law of war and likely violates the ENMOD Convention, which prohibits any method of warfare for changing—through the deliberate manipulation of natural processes—the dynamics, composition, or structure of the Earth (DoD Law of War Manual, §§ 6.10.1-6.10.2; FM 6-27, ¶¶ 2-139, 2-140). ………………………………………………………………………………………..

As parties to AP I and the ENMOD Convention, both North Korea and Russia have legal obligations not to use environmental techniques that are prohibited by the Convention, or to employ means or methods of warfare that can cause widespread, long-term, and severe damage to the natural environment.  https://cimsec.org/radioactive-tsunamis-nuclear-torpedo-drones-and-their-legality-in-war/

September 5, 2023 - Posted by Christina Macpherson | legal, oceans, Reference, weapons and war