Why allies are rebuilding domestic defence production

Will US allies genuinely bring defence capability and production back home, or is the current interest only a temporary blip?

Some repatriation is likely, especially for consumable weapons and munitions, while allied technology sharing and licensed production continue.

The case for domestic production developed here concerns the length of the supply line as well as political relations between allies. Spearfish provides the concrete example: British torpedo production depends on an engine supplied from America. Drones, missiles, armaments, and ammunition are proposed areas for more manufacture in Britain. Shared intellectual property and licenses to build domestically are envisaged as ways to retain cooperation while distributing productive capacity. The proposal values allies that can sustain their own forces and contribute material support.