New Delhi: Congress top leadership is “very upset” with senior MP P Chidambaram's remarks about 'Operation Blue Star' that it was a mistake and Indira Gandhi paid for it with her life with sources saying leaders must be careful while making statements that can create embarrassment for the party.

Chidambaram was speaking at a discussion on journalist Harinder Baweja's book They Will Shoot You, Madam at the Khushwant Singh Literature Festival in Himachal Pradesh's Kasauli on Saturday when he made the remarks.

BJP targeted the Congress over Chidambaram's remarks with BJP national spokesperson R P Singh claiming that history must record the truth that it was not a national necessity but a “political misadventure” by the former Prime Minister.

Union Minister Kiren Rijiju said, “Chidambaram-j

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