Ret. Lt. General Mark Hertling and the Defense and Security Department president at the Center for Strategic and International Studies Seth Jones join CNN’s Erin Burnett to discuss. French ...

Ret. Lt. General Mark Hertling and aviation analyst Miles O'Brien discuss the latest on the crash involving an Azerbaijan Airlines jet. Early indications suggest a Russian anti-aircraft system ...

"It's a heavyweight boxing match," retired Lt. Gen. Mark Hertling, who served as the commander of the US Army in Europe, wrote in a Twitter thread late Monday night. "In 2 months of fighting ...