Too many plotholes
Some major spot holes (SPOILERS ahead...proceed with caution if you haven't watched it yet) ruined the movie for me.
1. How does Amitabh Bacchan, a dual leg amputee with no prosthetic legs manage to drive a car with normal controls?
2. How the terrorist manage to go through the briefing (after the supposed "rescue") without having any proof that he is an Indian citizen? Why the girl did not say anything to the jawans? Even if I agree that she was traumatized at the moment, why she kept silent over so many years and why she suddenly divulged everything to Amitabh's daughter?
3. How can two mid-level officers (one of them even suspended) manage to tap a minister's home phone without anyone knowing? The tapping is usually done by tech guys (who has access to required tools/machines and knowledge) who only work under orders - I doubt any of them has that kind of power.
4. In the first "Wazir" attack, "he" stabs Amitabh and after setting fire flees the scene. But seeing as he was only an imagination of Amitabh himself, how did he manage to hide the knife (because the maid came and he was never alone since). And why they did not check the knife for fingerprints during second Wazir attack (It should be full with Amitabh's own as he was handling it without gloves).
5. The call left by Wazir on the ministers phone was obviously made by Amitabh. Why the minister did not inform anyone about this suspicious call? (He obviously had no idea who this Wazir is)
6. Why no disciplinary actions were taken against Farhan/John? remember Farhan was suspended and had no authority to take down a man/attacking government facilities (even if he was a terrorist), at the end he was shown roaming around freely!
Happiness is only Illusion