The former Secretary of Defense, the former Director of National
Intelligence, and the former admiral in charge of U.S. Naval forces in
the Pacific have all warned us that climate change is a threat to our
national security. Around the world, climate change is increasing natural disasters,
refugee flows, and conflicts over basic resources like food and water,
complicating American involvement and security. Climate change is
linked to drought and crop loss and failure in southern Africa, leaving
more than 6 million children malnourished by famine. It is increasing
monsoons and heat waves in Pakistan, driving 11 million people out of
their homes.