Inspired from real events, I'd say not inspired but totally based on real events. Only two terrorist attacks are mainly shown in the movie. Nothing is exaggerated in the movie it is shown mostly as it happened. It makes you blood boil. More such real events are explained as such in book 'India's most fearless' by Shiv Aroor Rahul. I had already read the book, movie tried it's best to contain every detail. I didn't want movie to end it was so awesome, if same happens to you read the book which is also great and filled with details.