Iran Nuclear Sites Fortified: Post-Trump Threat, Tehran Builds Bunkers Revealed by Satellite Images

Published on: 20 Feb 2026 at 11:12 AM

Published by: thefactnews

Iran Nuclear Sites Fortified: Post-Trump Threat, Tehran Builds Bunkers Revealed by Satellite Images

February 20, 2026
Amid escalating US-Iran tensions, satellite imagery exposes Iran’s aggressive fortification of nuclear facilities following Trump’s military strike threats. Tehran has constructed concrete bunkers and earth coverings to shield sites from potential attacks.

Defensive Construction Drive

Post-2025 US strikes on 3 facilities, Iran initiated repairs and protection:

Parchin Complex (30km SE Tehran): Sensitive military site previously hit by Israel (Oct 2014). New rectangular earthen structure conceals underground nuclear activity.
Isfahan Facility: Largest uranium stockpile; 3 access tunnels filled with soil by Feb 10 imagery. Ground-level strikes now ineffective.

Bunker Specifications

Institute for Science & International Security (ISIS) analysis:

Tunnels encased in 36m long, 12m diameter concrete structures, topped with soil walls.
Sites transformed into indistinguishable “concrete-earth coffins” – radar/satellite detection challenging.

Strategic Context

Trump’s recent warnings promise “far worse” strikes if no nuclear deal; US armada deployed. Iran’s moves counter June 2025 Operation Midnight Hammer damage, ensuring program survival against airstrikes.