A new Pentagon strategy paper breaks with much past US defense policy, while ignoring climate change as a growing threat. It also foresees allies receiving less military support from Washington.

The US will concentrate mostly on protecting the homeland and combating the threat posed by China, while expecting allies to look after their own defense with reduced help from Washington, according to a strategy document released by the Pentagon on Friday.

The 2026 National Defense Strategy (NDS), subtitled “Restoring peace through strength for a new golden age of America,” differs markedly in its priorities from previous such documents.

It highlights a very different set of threats to US security, with immigration seen as a top danger and that posed by Russia and China downplayed.