HomeUPSCUnder which of the following circumstances can the national emergency under Article 352 of the Indian constitution be proclaimed? 284. Under which of the following circumstances can the national emergency under Article 352 of the Indian constitution be proclaimed?By Admin / October 4, 2025 A. Failure of constitutional machinery B. Breakdown of law and order C. Internal disturbance D. War, external aggression or armed rebellion ✅ The correct answer is option D.