Juliette Kayyem is right: The Pentagon thinks climate change endangers our security (“The Pentagon’s new threat,” Op-ed, Nov. 5). But the Pentagon is worsening the threat. As the world’s largest institutional fossil-fuel user, with forces and bases covering the globe, it burns more oil every year than many nations.

But that’s its mission. Tasked with securing a global oil economy and US dominance over that economy, the Pentagon is joined at the hip to climate change.