The Cold War started earlier than we think — and maybe never ended at all. Historian Calder Walton says understanding the US-Soviet conflict prepares us for this era of tensions with Russia and China.

Calder Walton recounts how Russia and China are using their intelligence agencies to reverse the outcome of the Cold War

Calder Walton explains why, as the 20th anniversary of the U.S.-led invasion of Iraq passes, it is useful to understand how China's intelligence and national security establishment reacted at the time.

Contemplating the causes and effects of 9/11, as well as the experiences of those on the ground that day, yields useful insights into tackling today’s intelligence and policy challenges. This report is derived from 9/11: Intelligence and National Security Twenty Years Later, a full-day conference hosted by the Belfer Center’s Intelligence Project that examined the impact of the 9/11 through personal stories and policy reflections. It explores how strategic intelligence on Al Qaeda’s intentions failed to lead to policy changes that could have prevented the attacks on 9/11. It also examines how the U.S. can draw on the experience of 9/11 as it faces the specter of great power competition with China against the backdrop of globalized, existential threats posed by climate change and novel disease outbreaks like COVID-19. It also explores the critical nexus between intelligence warning and policy action. More broadly, the twentieth anniversary of 9/11 is an opportunity to reflect on who we are as a nation and who we want to be in confronting violent extremism—both at home and around the world.