climate change national security
The moderators didn't mention climate change.
"That is a major crisis."
WHAT'S HAPPENING
WHAT'S HAPPENING
The candidate links climate change to Syrian conflict. Republicans deem it "absurd."
The Islamic State may be the most immediate challenge facing the Defense Department, but Secretary Chuck Hagel said Wednesday that one of the biggest long-term security threats to the U.S. isn't a terrorist group. It's climate change.