
Defense Secretary Mark Esper told lawmakers on Thursday he has launched an investigation into leaks across the Pentagon, in response to a series of "bad" disclosures of sensitive information to the news media over the past year and amid reports that Russians paid militants in Afghanistan to kill U.S. troops.
"We are aggressively pursuing leaks within the Defense Department," Esper told the House Armed Services Committee during a hearing about the military's role in civil law enforcement, adding that leaks are a problem across the U.S. government. "It's bad and it's unlawful and it needs to stop."