Defense Spending Gets a Supply Chain Makeover as Governments Race to Secure Critical Materials

The race for military dominance is becoming a high-stakes battle to keep supply lines alive. In the past, defense budgets centered on tanks, missiles, and fighter jets to strengthen military power. But as global tensions rise, governments are pouring billions into securing the supply chains that keep those systems running.

Maritime fault lines: Two growing pressure points are exposing cracks in global defense systems — vulnerable shipping lanes and fragile military supply chains. In the Strait of Hormuz, even fears that Iran could deploy naval mines are enough to disrupt trade, raise insurance costs, and shake energy markets. Former UK Rear Admiral Jon Pentreath warned that “Minefields don’t even need mines to be effective” if ships believe the threat is real. That alone is pushing governments to deploy autonomous naval fleets to secure routes and keep commercial traffic moving through one of the world’s most critical energy chokepoints.

• RTXRTX
  and Textron SystemsTXT
  supply the US Navy with autonomous minehunting systems, including sonar-equipped drones and unmanned surface vehicles.
• The UK and French navies recently began receiving Thales’s unmanned Maritime Mine Counter Measures system, which uses drone boats, sonar arrays, and hunter submersibles.

America’s Defense Magnet Problem

While autonomous vessels help secure shipping routes, defense contractors are also racing to reduce reliance on foreign-controlled components critical to military systems. Under rules introduced during Trump’s first term, defense companies will be barred from supplying the military with key magnets if any stage of production involves China, Russia, Iran, or North Korea, starting Jan. 1, 2027. The challenge is growing as China continues dominating the supply chain behind fighter jets and missile systems.

• More than 200K suppliers feed into US weapons systems, yet the Government Accountability Office says visibility into critical component sourcing remains limited.
• Lockheed MartinLMT
  , Northrop GrummanNOC
  , and General DynamicsGD
  are scrambling to rebuild supply chains as some push Congress for more time.

Breaking free: Rebuilding rare earth processing outside China takes years of operational expertise, something no amount of capital can quickly replace, according to OilPrice. President Donald Trump recently reiterated that federal agencies “must buy American,” even as industry executives warn domestic capacity remains too limited to meet the 2027 deadline. Without a major production ramp-up soon and supply chains still heavily exposed, the West risks entering the next decade still dependent on the very systems it is trying to break away from.