border surveillance

DRDO’s Solar-Powered Stratospheric Airship: India’s High-Altitude Edge in Border Surveillance DRDO’s Solar-Powered Stratospheric Airship: India’s High-Altitude Edge in Border Surveillance Published: November 11, 2025 | By DefenceNiti Team In a bold revival of lighter-than-air technology, the Defence Research and Development Organisation (DRDO) has reignited its ambitious project for a solar-powered stratospheric airship, positioning India as […]