A federal grand jury has issued a new subpoena to a former advisor of James Comey as part of an ongoing investigation into leaks. This development marks a significant step forward in the probe, which is seen as part of a broader effort involving the Justice Department. The subpoena targets a longtime friend of Comey, who has been a vocal critic of former President Trump. This renewed inquiry into media leaks highlights the continuing tensions surrounding the investigation into connections between Trump and Comey.