The document discusses the global financial crisis and challenges for risk managers. It covers several topics including: 1) The financial crisis was due to networks becoming unstable once they cross thresholds of complexity/size. 2) Mainstream economic models and risk management practices failed to comprehend and model systemic risks in the financial system. 3) Financial markets alternate between normal and exceptional modes, and risk management needs to account for rare "dragon king" events stemming from endogenous market dynamics. 4) Moving forward, there is a need for integrated financial risk governance, new modeling tools that understand interrelated systemic risks, and policies to make financial and real economies more resilient.