In September 2022, a series of underwater explosions tore through the Nord Stream pipelines beneath the Baltic Sea. The destruction of this $20 billion pipeline severed a major artery of Russian gas supplies to Europe, disrupted economies and triggered a manhunt that strained relations within the NATO alliance.

In this episode, journalist Hannah Lucinda Smith speaks with Wall Street Journal Chief European Political Correspondent Bojan Pancevski about his investigation into this seismic act of sabotage.

Despite capturing the imagination of millions, the mystery of who blew up the pipeline has so far gone unsolved – was it the CIA? Was it part of the shadow war between Russia and the West? Could Putin himself have been behind it?

Drawing on years of reporting and access to intelligence officials, investigators and key players, Pancevski reconstructs the events behind one of the most consequential acts of sabotage in modern history.

Bojan Pancevski is Chief European Political Correspondent at The Wall Street Journal. He is the author of The Nord Stream Conspiracy: The Inside Story of the Explosions That Shook the World.

Hannah Lucinda Smith is a journalist and foreign correspondent reporting on global politics, conflict and international affairs.