Iraq Hostage Crisis - What options does India have

ISIS militants may use the remaining 39 Indian hostages as human shields in case of a military offensive by Iraqi or US authorities

ISIS militants may use the remaining 39 Indian hostages as human shields in case of a military offensive by Iraqi or US authorities, the only person among the group to flee the captors has told government officials.
While there is little information on the other captives, in its conversations with Harjit Singh, now in the safe custody of Kurdish authorities in Erbil, the government has concluded that the Islamic State in Iraq and the Levant may use the Indians as their first line of defence, an official told HT on Saturday.

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What options does Indian Government have?