Article 352 deals with the proclamation of an emergency due to war, external aggression or armed rebellion. This is popularly known as ‘National Emergency’. Under Article 352, the President can declare a national emergency when the security of India or a part of it is threatened by war or external aggression or armed rebellion. Also, the president can declare a national emergency even before the actual occurrence of war or external aggression or armed rebellion, if he is satisfied that there is an imminent danger.
The phrase ‘armed rebellion’ was inserted by the 44th Amendment Act of 1978, replacing the original phrase ‘internal disturbance’.