New Delhi, Sept. 28 -- US prosecutors have alleged that Indian national Nikhil Gupta and former intelligence operative Vikash Yadav, accused of involvement in a plot to kill pro-Khalistan separatist Gurpatwant Singh Pannun, had discussed the murder of another individual in Nepal or Pakistan. The allegation was made in a document filed this week in the US district court in the Southern District of New York, which is set to begin the trial of Gupta. P3...