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Trump’s Defense Secretary Cites Climate Change as National Security Challenge

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Trump’s Defense Secretary Cites Climate Change as National Security Challenge


Our story on March 13 concerning Secretary of Defense James Mattis’ views on the relationship between climate change and national security was based on excerpts from unpublished written exchanges between Mattis and several Democrats on the Senate Armed Services Committee following his Jan. 12 confirmation hearing. ProPublica has now obtained more comprehensive sets of these “Questions for the Record” and his answers.

While the exchanges mainly focus on climate change, fossil fuel and renewable energy and related security issues, which was the initial reporting focus, they include discussions of Mattis’ views on issues ranging from Iran’s nuclear weapons program to ISIS, Guantanamo and LGBT issues in the military. The merged documents are posted on DocumentCloud. Explore and let us know what excites, irks or confuses you, and share this package with others. Post comments or get in touch via suggestions@propublica.org.

Secretary of Defense James Mattis has asserted that climate change is real, and a threat to American interests abroad and the Pentagon’s assets everywhere, a position that appears at odds with the views of the president who appointed him and many in the administration in which he serves.

In unpublished written testimony provided to the Senate Armed Services Committee after his confirmation hearing in January, Mattis said it was incumbent on the U.S. military to consider how changes like open-water routes in the thawing Arctic and drought in global trouble spots can pose challenges for troops and defense planners. He also stressed this is a real-time issue, not some distant what-if.

“Climate change is impacting stability in areas of the world where our troops are operating today,” Mattis said in written answers to questions posed after the public hearing by Democratic members of the committee. “It is appropriate for the Combatant Commands to incorporate drivers of instability that impact the security environment in their areas into their planning.”

Mattis has long espoused the position that the armed forces, for a host of reasons, need to cut dependence on fossil fuels and explore renewable energy where it makes sense. He had also, as commander of the U.S. Joint Forces Command in 2010, signed off on the Joint Operating Environment, which lists climate change as one of the security threats the military expected to confront over the next 25 years.

But Mattis’ written statements to the Senate committee are the first direct signal of his determination to recognize climate change as a member of the Trump administration charged with leading the country’s armed forces.

These remarks and others in the replies to senators could be a fresh indication of divisions or uncertainty within President Donald Trump’s administration over how to balance the president’s desire to keep campaign pledges to kill Obama-era climate policies with the need to engage constructively with allies for whom climate has become a vital security issue.

Mattis’ statements on climate change, for instance, recognize the same body of science that Scott Pruitt, the new Environmental Protection Agency administrator, seems dead-set on rejecting. In a CNBC interview last Thursday, Pruitt rejected established science pointing to carbon dioxide as the main driver of recent global warming.

Mattis’ position also would appear to clash with some Trump administration budget plans, which, according to documents leaked recently to The Washington Post, include big cuts for the Commerce Department’s oceanic and atmospheric research — much of it focused on tracking and understanding climate change.

Even setting aside warming driven by accumulating carbon dioxide, it’s clear to a host of experts, including Dr. Will Happer, a Princeton physicist interviewed by Trump in January as a potential science adviser, that better monitoring and analysis of extreme conditions like drought is vital.

Mattis’ statements could hearten world leaders who have urged the Trump administration to remain engaged on addressing global warming. German Chancellor Angela Merkel is scheduled to meet Trump on Friday.

Security questions related to rising seas and changing weather patterns in global trouble spots like the Middle East and sub-Saharan Africa are one reason that global warming has become a focus in international diplomatic forums. On March 10, the United Nations Security Council was warned of imminent risk of famine in Yemen, Somalia and South Sudan.

As well, at a Munich meeting on international security issues last month, attended by Mattis and Vice President Mike Pence, European officials pushed back on demands that they spend more on defense, saying their investments in boosting resilience to climate hazards in poor regions of the world are as valuable to maintaining security as strong military forces.

“[Y]ou need the European Union, because when you invest in development, when you invest in the fight against climate change, you also invest in our own security,” Federica Mogherini, the European Union’s high representative for foreign affairs and security policy, said in a panel discussion.

Concerns about the implications of global warming for national security have built within the Pentagon and national security circles for decades, including under both Bush administrations.

In September, acting on the basis of a National Intelligence Council report he commissioned, President Obama ordered more than a dozen federal agencies and offices, including the Defense Department, “to ensure that climate change-related impacts are fully considered in the development of national security doctrine, policies, and plans.”

A related “action plan” was issued on Dec. 23, requiring those agencies to create a Climate and National Security Working Group within 60 days, and for relevant agencies to create “implementation plans” in that same period.

There’s no sign that any of this has been done.

Whether the inaction is a function of the widespread gaps in political appointments at relevant agencies, institutional inertia or a policy directive from the Trump White House remains unclear.

Queries to press offices at the White House and half a dozen of the involved agencies — including the Environmental Protection Agency, Department of Defense, Department of Energy and Commerce Department — have not been answered. A State Department spokeswoman directed questions to the National Security Council and the White House, writing:

“We refer you to the NSC for any additional information on the climate working group.”

Mattis’ statements were submitted through a common practice at confirmation hearings in which senators pose “questions for the record” seeking more detail on a nominee’s stance on some issue.

The questions and answers spanned an array of issues, but five Democratic senators on the committee asked about climate change, according to a government official briefed in detail on the resulting 58-page document with the answers. The senators were Jack Reed of Rhode Island, the ranking member, Tim Kaine of Virginia, Mazie Hirono of Hawaii, Jeanne Shaheen of New Hampshire and Elizabeth Warren of Massachusetts.

Excerpts from Mattis’ written comments to the committee were in material provided to ProPublica by someone involved with coordinating efforts on climate change preparedness across more than a dozen government agencies, including the Defense Department. Senate staff confirmed their authenticity.

Dustin Walker, communications director for the Senate Armed Services Committee, said responses to individual senators’ follow-up questions are theirs to publish or not.

Here are two of the climate questions from Sen. Jeanne Shaheen of New Hampshire, with Mattis’ replies:

Shaheen: “I understand that while you were commander of U.S. Joint Forces Command you signed off on a document called the Joint Operating Environment, which listed climate change as one of the security threats the military will face in the next quarter-century. Do you believe climate change is a security threat?”

Mattis: “Climate change can be a driver of instability and the Department of Defense must pay attention to potential adverse impacts generated by this phenomenon.”

Shaheen: “General Mattis, how should the military prepare to address this threat?”

Mattis: “As I noted above, climate change is a challenge that requires a broader, whole-of government response. If confirmed, I will ensure that the Department of Defense plays its appropriate role within such a response by addressing national security aspects.”

In a reply to another question, Mattis said:

“I agree that the effects of a changing climate — such as increased maritime access to the Arctic, rising sea levels, desertification, among others — impact our security situation. I will ensure that the department continues to be prepared to conduct operations today and in the future, and that we are prepared to address the effects of a changing climate on our threat assessments, resources, and readiness.”

Here’s some recommended reading for those seeking more depth:

Here’s How US Allies Are Trying to Convince Trump To Take Climate Change Seriously

UN Dispatch, Feb. 22, 2017, by John Light

Mattis on Military Energy Strategy

New America, Jan. 13, 2017, by Sharon Burke

Climate and Security Advisory Group: Briefing Book for a New Administration

The Center for Climate and Security, Nov. 14, 2017

(The Center for Climate and Security also has a helpful chronology of U.S. defense and intelligence output on these intertwined issues.)

A New Climate for Peace: Taking Action on Climate and Fragility Risks

A 2015 report commissioned by the foreign ministers of the Group of Seven

The National Security Case for Funding the EPA

The Hill (opinion), March 11, 2017, by Sherri Goodman (a deputy undersecretary of defense from 1993 to 2001)

Also, I ran a discussion on the subject at the Washington offices of the Hoover Institution last month with retired Navy Admiral Gary Roughead, who was chief of naval operations from 2007 to 2011; Alice Hill, who directed work on the intersection of climate and national security policy at the National Security Council during the Obama administration; and David Slayton, a retired Navy officer who is now at Hoover tracking Arctic security and energy policy. Watch the video.



  1. Aaron_of_Portsmouth March 17, 2017

    Finally, a voice of reason is heard from within Trump’s Administration—or should we say, the Bannon/Putin Administration. I’m wondering out loud if Trump or Pruitt could pass a Sophomore High School Science quiz, and I have to answer with a resounding “NO!”.
    Pence &Trump, are obviously ill-suited to be in WH, but there they are. As for Bannon, who whispers dark and corrupt ideas in Trump’s ears—manipulating Trump like some latter-day Machiavelli—Steve represents one of the most sinister elements ever to be allowed to set foot in the WH, and must be fingered as one who continues to keep Donald in the dark on Climate Change and a host of other topics.

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    I dunno. If Mattis keeps using science to explain things, President Bannon is going to make his figurehead ask for his resignation. After all we cannot have people entrenched in reality contaminating the fantasy realm that Bannon has built up for Teflon Donnie.

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