New Delhi/Chandigarh, Sep 4 - Ten hardcore Sikh militants holed up in Pakistan for many years are under pressure from its intelligence agencies to revive Sikh militancy in India, Indian intelligence sources aver. "Pakistan is so desperate to reactivate the militant leaders that it has told them to either create turmoil in India -- or quit Pakistani territory for good," said a senior security official who spoke only if he was not identified. Security officials say the list of 10 names have been shared with several police forces, including those in Delhi and Punjab, where a bloody decade-long separatist campaign was finally put down by 1993.