Contemporary Intelligence Warning Cases presents lessons learned and recommendations for producers and users of intelligence warning in their joint venture to anticipate, prepare for, mitigate, and prevent future threats to national security. It presents and synthesizes the findings of 16 contemporary intelligence warning case studies undertaken by leading intelligence scholars and former intelligence practitioners. It is the first multi-case study of intelligence warning and adopts a uniquely broad and contemporary approach to the phenomenon, featuring both successful and failed cases. Consistent with the increasing complexity of intelligence problems and scope of intelligence services, it ranges from traditional warning problems such as invasions and wars, through terrorist attacks, to threats that lie beyond the traditional core scope of intelligence services such as pandemics, financial crises, climate change, strategic acquisitions and attacks on cultural heritage.