New Delhi has said Pakistan's planned execution of Mr Jadhav, who was abducted from Iran, will be considered "pre-meditated murder" and it would do "whatever it takes" to save him. In parliament, all parties have united to condemn his sentence, handed by a Pakistani military court on Monday. Foreign Minister Sushma Swaraj has warned that Islamabad should "consider the consequences" for bilateral ties if he is executed.
Experts say the options available to India include the recall of its high commissioner from Islamabad and reducing the mission to consular level. The government can also consider revoking Most Favoured Nation status to Pakistan, create international opinion to isolate Pakistan, and move the international court of justice.
Pakistan claims Mr Jadhav was arrested from the troubled province of Balochistan in March 2016 and that he was working as a spy working for intel agency Research and Analysis Wing or RAW. Days after his arrest, the Pakistan army had released a video in which he was seen admitting to the claims made by Pakistan. India has dismissed the video and denied the Pakistani claims.