State of emergency

A government-declared condition that activates extraordinary powers or temporary restrictions to address a serious threat to public safety or constitutional order.

Emergency powers: Temporary legal authorities that governments may exercise during a declared crisis. A declaration activates or expands these authorities under specified legal conditions.
Constitutional law: The body of law defining government institutions, powers, and fundamental rights. Constitutions often specify who may declare an emergency and which limits remain binding.
State of siege: An exceptional regime, often involving military authority, imposed during grave threats to a state. Some legal systems distinguish this more security-focused regime from a general emergency declaration.
Reichstag Fire Decree: A 1933 German decree that suspended key civil liberties after the Reichstag fire. It shows how an emergency justification enabled the Nazi regime to suppress opposition.
Derogation: A state's formal, temporary suspension of certain treaty obligations under exceptional conditions. Human-rights treaties permit limited derogations during emergencies, subject to safeguards.
Rule of law: The principle that public power is exercised under publicly known, equally applied laws. Emergency measures remain legitimate only when public authorities are still constrained by law.
Public health emergency: A formally recognized health crisis that permits special measures to control disease or health-system risks. It may trigger specialized health laws rather than a general constitutional emergency regime.
Emergency (India): The period of national emergency imposed in India from 1975 to 1977 under Indira Gandhi. The episode illustrates how emergency authority can restrict political activity and civil freedoms.
Martial law: Military governance or military authority over civilian functions during exceptional conditions. Some emergency regimes transfer civilian functions or security responsibilities to the military.
Human rights: Rights and freedoms regarded as belonging to every person. Restrictions during emergencies must be assessed against rights that remain protected or non-derogable.

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