WATCH: General Jim Mattis talks climate change with Andrea Mitchell - MSNBC

WATCH: General Jim Mattis talks climate change with Andrea Mitchell  MSNBCFormer Secretary of Defense, General Jim Mattis sits down with Andrea Mitchell to talk about the impending threat of climate change.

WATCH: General Jim Mattis talks climate change with Andrea Mitchell - MSNBC
WATCH: General Jim Mattis talks climate change with Andrea Mitchell  MSNBC

Former Secretary of Defense, General Jim Mattis sits down with Andrea Mitchell to talk about the impending threat of climate change.