Sen. Biden is concerned with how U.S. foreign policy is perceived in the Muslim world.
WASHINGTON (CNN) - Sen. Joe Biden of Delaware and Sen. Hillary Clinton of New York tried to prove to an Iraq war veteran and his mother that they would be strong leaders by avoiding war with Iran.
After serving his third tour of duty in Iraq, Christopher Jackson said he was nervous that he'd be sent back to fight in Iran.
"I feel if we continue on the path we're at, that's where we will be at in Iran," Jackson said. "That's not what our troops need. Our troops need to come home now."
Biden told Jackson and his mother he thought a vote to categorize Iran's Revolutionary Guard as a terrorist organization was "completely counterproductive" and said it convinced the Muslim world that the war in Iraq is "really a war against Islam."
"The way to do that, ma'am, is to not ratchet up the winds of war here," Biden said.
Clinton said she did "oppose a rush to war" and said sanctioning Iran and the Revolutionary Guard was an important step to "getting to the diplomatic table with both carrots and sticks."
–CNN Associate Producer Lauren Kornreich