Proclamation of National Emergency has been defined under

Proclamation of National Emergency has been defined under article 352.According to this, If the President is satisfied that a grave emergency exists whereby the security of India or of any part of the territory thereof is threatened, whether by war or external aggression or armed rebellion, he may, by Proclamation, made a declaration to that effect in respect of the whole of India or of such part of the territory thereof as may be specified in the Proclamation Explanation.