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Relevance: GS-III (Environment Conservation, Defense Technology, Drones) Source: Global Environmental Reports, 2026

1 · What exactly happened?

Recently, scientists in war-torn Ukraine found something very disturbing: a small bird’s nest. But instead of being made from natural grass and twigs, the nest was tightly woven with military-grade plastic and glass wires.

These wires are actually left behind by advanced military drones. This heartbreaking discovery shows us a hidden danger: modern high-tech wars are silently dumping huge amounts of toxic electronic waste (e-waste) into our forests and fields, destroying nature permanently.

2 · Why are drones trailing wires in the sky?

Normally, a soldier flies a drone using wireless radio signals. But in modern wars, armies use powerful “jammers” to block these signals and crash the drones. To beat the jammers, engineers came up with a simple idea: attach a physical wire to the drone, just like a kite string.

The Technology
Fibre-Optic Drones
These new drones carry a spool of super-thin glass wire (fibre-optic cable). As the drone flies, the wire unwinds. Because it is physically connected to the pilot, enemy jammers cannot block it.
The Mess Left Behind
The “Trail Tangle”
Unlike invisible radio signals, these wires don’t disappear. Every single drone flight leaves kilometres of unbreakable plastic wire tangled in trees, bushes, and farmland forever.
Wildlife in Danger
Death Traps for Birds
Birds mistakenly use these strong wires to build nests. This leads to baby birds getting tangled and dying. Moreover, crashed drone batteries leak dangerous acid right into the soil.
Microplastic Poison
A Permanent Stain
These military wires are made of tough plastic that does not rot naturally. Over many years, they break down into tiny ‘microplastics’ that poison the groundwater and the food chain.

  • Wars Always Ruin Nature: This isn’t new. In the Vietnam War, armies sprayed toxic chemicals (Agent Orange) that destroyed forests and caused terrible diseases for generations. Today, drones are the new polluters.
  • Why India Must Pay Attention: India is rapidly buying and making thousands of drones to guard our borders in the Himalayas. If we aren’t careful, we could permanently pollute these beautiful mountains and harm the birds that migrate through them.
  • The Solution (Green Defense): Indian defense agencies like DRDO need to start making “biodegradable” drone parts that melt away harmlessly in nature. The army’s special Ecological Task Forces should also be used to clean up electronic junk from firing ranges.

UPSC Prelims Quick Facts
ENMOD Convention (1976) An international law that bans countries from using the environment as a weapon (for example, creating artificial floods or destroying forests to hurt the enemy).
Geneva Conventions (Protocol I) An international rule that clearly states armies must not cause widespread, long-term, and severe damage to the natural environment during a war.
FPV Drones First-Person-View drones. Small, cheap, fast drones where the pilot wears a headset to see exactly what the drone’s camera sees.
Ecological Task Force (ETF) Special units of the Indian Army made up of retired soldiers. They work specifically to plant trees, restore damaged lands, and protect nature.

MCQ Practice Question
Q. With reference to the environmental impact of warfare and international conventions, consider the following statements:

  1. Fibre-optic guided drones are completely immune to traditional radio electronic jamming.
  2. The ENMOD Convention of 1976 formally prohibits countries from deliberately modifying the environment to cause harm to another country.
  3. The Geneva Conventions have absolutely no rules regarding the protection of the natural environment during armed conflicts.

Which of the statements given above is/are correct?
(a) 1 and 2 only    (b) 2 and 3 only    (c) 1 and 3 only    (d) 1, 2 and 3

Answer: (a) 1 and 2 only

  • Statement 1 — Correct: Because fibre-optic drones use a real, physical wire to connect to the pilot (instead of invisible radio waves), enemy jammers cannot block them.
  • Statement 2 — Correct: The ENMOD Convention strictly bans the weaponization of the natural environment during warfare.
  • Statement 3 — Incorrect: Beware the trap! Protocol I of the Geneva Conventions explicitly states that armies must protect the natural environment from severe, long-term damage during wars.
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