The May 2023 Issue of Homeland Security Affairs features a policy essay that warns of conflicts between Emergency Management and Homeland Defense missions in the event of a major war and a research article that assesses how the Department of Homeland Security has incorporated climate change into its mission portfolio.

In National Security Competition or Cooperation Preparing for 21st Century Threats, Bob Roller analyzes problems stemming from a lack of effective planning and coordination between the Emergency Management community and the military in the event of a major war with a peer or near-peer competitor. In New, Old, and Reconfigured: Exploring the U.S. Department Of Homeland Security’s Path to Climate Security, Jeremiah Asaka and Magdalena Denham examine the extent to which DHS and several of its component agencies have integrated climate security into their missions.

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