After the first use of nuclear weapons in 1945, Albert Einstein warned that 'we thus drift towards unparalleled catastrophe'. Today we are no longer drifting but racing toward catastrophe at breakneck speed. This book analyses recent events that have brought about a dangerous Third Nuclear Age. From the collapse of arms control treaties and the development of hypersonic missiles, to the pop culture that shapes how we think about nuclear weapons, via how nuclear weapons intersect with the global threats posed by pandemics, populism, climate change, corruption, militarism, and racism, this book explores the nuclear zeitgeist of today. It presents the case for critical nuclear studies, and provides an important intervention into debates about nuclear weapons and international security. Today, the planet stands on the brink of catastrophe. This book tells you why, and what we can do about it.