President Trump’s national security report has been released, and climate change is not on it. That is a departure from not only the Obama administration, but the George W. Bush administration, some media are noting.

Since 2003, the Defense Department has indicated that climate change threatens “disruption and conflict,” refugee crises, border tensions and other military conflicts. President Obama saw the threat as more dire, putting climate change in the same conversation as the proliferation of weapons of mass destruction in his 2015 memo.

Trump, on the other hand, has referred to climate change as an “expensive hoax” concocted by the Chinese. 

“Not including climate change in a document about security threats is putting our head in the sand,” according to Rosina Bierbaum, a University of Michigan environmental policy scientist.