Pax Silica is a U.S.-led, nonbinding international declaration (launched Dec 2025) to secure resilient, trusted supply chains for AI-era technologies—spanning critical minerals, energy, advanced manufacturing, semiconductors, compute, AI infrastructure, and logistics. Joining means endorsing the Declaration’s political commitments: deepen economic/technology cooperation; reduce coercive dependencies; coordinate investment and ‘‘strategic stack’’ partnerships (from minerals and refining through semiconductors and data centers to networks and models); protect sensitive technologies and infrastructure; and pursue investment‑security and enforcement coordination. The Declaration is a policy commitment, not a treaty—signing indicates political alignment and willingness to cooperate, not legally binding obligations.