President's Rule under Article 356 can remain in force for a maximum period of ______ years, subject to Parliamentary approval every six months.

President's Rule duration safeguards: (a) Initial period: 6 months from Parliamentary approval, (b) Extension: Can be extended by Parliamentary approval every 6 months, (c) Maximum duration: 3 years total (44th Amendment, 1978), (d) Extensions beyond 1 year require: (i) National Emergency in India or that State (Article 352), AND (ii) Election Commission certification that elections cannot be held due to security/administrative constraints, (e) Rationale: Prevent indefinite suspension of State democracy; ensure return to normalcy, (f) Historical use: Article 356 used over 120 times; SR Bommai (1994) curbed political misuse; post-1994, duration more strictly monitored. Illustrates federal safeguards: temporary Union intervention for genuine breakdown, not political convenience.