Daily Current Affairs

October 23, 2025

Current Affairs

India Sends Prussian Blue Capsules to Indonesia

Context: India has supplied Prussian Blue capsules to Indonesia after Cesium-137 (Cs-137) contamination was detected in Jakarta. This humanitarian action followed an official request from Indonesia’s Ministry of Health, underscoring India’s role as a regional first responder in public health and nuclear safety cooperation.

About Prussian Blue:

  • Nature: Prussian Blue (ferric hexacyanoferrate) is a dark blue pigment and an FDA-approved oral medicine used for treating internal contamination by radioactive or non-radioactive caesium (Cs) and thallium (Tl).
  • Mechanism: It binds radioactive isotopes in the intestine, preventing absorption into the bloodstream and facilitating excretion through stool.
  • Use: It is part of the WHO Essential Medicines List and a key stockpile item in nuclear emergency preparedness.

About Caesium-137 (Cs-137):

  • Origin: A radioactive isotope produced as a byproduct of nuclear fission in reactors and weapons testing.
  • Half-life: Around 30 years, meaning it remains hazardous for decades.
  • Radiation Type: Emits beta and gamma radiation, both harmful to living tissue.
  • Health Impact:
    • External exposure can cause burns and acute radiation sickness.
    • Internal exposure increases risks of cancer and organ damage.
  • Detection & Cleanup: Radiation detectors and decontamination agents such as Prussian Blue and potassium ferricyanide compounds are used to mitigate exposure.

India’s Role and Strategic Significance:

  • Humanitarian Leadership: India’s timely delivery reflects its expanding role as a regional health and disaster relief provider, aligning with its “Neighbourhood First” and “Act East” policies.
  • Technological Capability: India maintains Prussian Blue stocks under the National Disaster Management Authority (NDMA) and Department of Atomic Energy (DAE) for nuclear or radiological emergencies.
  • Diplomatic Value: Strengthens India–Indonesia bilateral relations, particularly under the ASEAN-India partnership framework for regional security and health cooperation.
  • Historical Parallel: India had earlier provided medical and nuclear safety assistance to Japan and Sri Lanka under similar emergency circumstances.

Conclusion:

India’s dispatch of Prussian Blue capsules to Indonesia reinforces its commitment to regional stability, humanitarian aid, and nuclear safety diplomacy — enhancing its image as a trusted partner in crisis response and responsible scientific power in Asia.

Taftan Volcano Reawakens After 700,000 Years

Context: According to reports from Live Science (LS), the Taftan Volcano in southeastern Iran appears to have shown renewed activity after nearly 700,000 years of dormancy. Scientists have detected increased geothermal emissions and seismic tremors in the region, suggesting reactivation within the long-dormant volcanic system.

Taftan Volcano

About Taftan Volcano:

  • Location: Situated in Sistan–Baluchestan Province of southeastern Iran, near the Pakistan border, Taftan is the highest volcano in Iran and one of the few active ones in the Makran volcanic arc.
  • Elevation: Approximately 3,940 meters (12,927 feet) above sea level.
  • Volcano Type: Stratovolcano (Composite Cone) — built up by successive eruptions of lava flows, ash, and pyroclastic material.
  • Tectonic Setting: Lies within the Alborz–Makran volcanic belt, where the Arabian Plate is being subducted beneath the Eurasian Plate.
    This subduction process generates magma that feeds volcanoes like Taftan.
  • Geological Features:
    • Active hydrothermal vents and fumaroles continuously emit sulphur gases.
    • Presence of sulphur deposits, hot springs, and altered rocks around the summit indicates ongoing geothermal activity.
    • The last confirmed eruption occurred around 710,000 years ago, during the Pleistocene epoch.

Understanding Stratovolcanoes (Composite Cones):

  • Structure: Tall, steep-sided cones composed of alternating layers of lava, ash, and tephra.
  • Magma Composition: Typically andesitic, sometimes basaltic to rhyolitic — rich in silica, causing viscous magma and explosive eruptions.
  • Eruption Style: Highly explosive, often producing pyroclastic flows and ash clouds that can travel large distances.
  • Tectonic Environment: Common in subduction zones — regions where an oceanic plate sinks beneath a continental plate.
  • Famous Examples:
    • Mount Fuji (Japan)
    • Mount Vesuvius (Italy)
    • Volcán de Fuego (Guatemala)
    • Mount St. Helens (USA)

Significance of Taftan’s Reactivation:

  • Geological Insight: Offers rare evidence of volcanic reawakening in the Makran arc, a region otherwise known for earthquakes and subduction-related hazards.
  • Regional Impact: Increased geothermal activity could pose risks to local settlements and infrastructure but also offers geothermal energy potential.
  • Scientific Relevance: Helps in studying the Arabian–Eurasian plate interaction, crucial for understanding seismic and volcanic hazards across Iran, Pakistan, and Afghanistan.

Conclusion:

The potential reawakening of Taftan Volcano underscores the dynamic nature of the Earth’s lithosphere. While dormant for nearly a million years, its renewed activity reminds us that even ancient volcanic systems remain geologically alive — warranting close monitoring and regional preparedness.