diff --git a/evolution/network_simulator.py b/evolution/network_simulator.py
new file mode 100644
index 000000000..3654b31cd
--- /dev/null
+++ b/evolution/network_simulator.py
@@ -0,0 +1,4 @@
+"""Phase 20: Global Sovereign Network Simulation.
+Decentralized resilience for the Nexus infrastructure.
+"""
+# ... (code)