Climate Change Is an Existential Issue, Right?

CNN's John Defterios says climate change is an "existential issue" for the entire planet. The United States should take it seriously, he says. He adds that a lot of those partners in the Pacific prioritize climate change as an existential issue. And so being able to put that in the U.S. strategic documents is really serious signal," defterios says. 'This is the area where we're likely to see the greatest whiplash'