VP Biden Invokes Son's Death in Contentious Exchange With Heckler

The heckler challenged Biden over policies on Kurdish allies and Turkey.

"My American friends died!" the unidentified man said. "Why did you tell the YPG to go back across the Euphrates?"

"The deal was to get them into Manbij and to work ... They [would then] go back across the Euphrates so we could have special forces move in," Biden said. "That's why."

"My friend died!" the man responded.

"Will you listen?" Biden shot back. "So did my son, OK?"

As the crowd began to chant over the protester, Joe Biden urged them to stop and offered to speak with the man privately backstage. The vice president's office has not said whether the two met.