Israel's invasion of southern Lebanon is evoking comparisons to 1982, the year Israel tried to rout an enemy on the other side of the border, leading to a catastrophe for Palestinian civilians. What happened at Sabra and Shatila sparked international outrage and a rebuke from Washington. Forty-two years later, Israel is risking falling into a Lebanese abyss once more. In this episode, historian Ahron Bregman, who was an IDF soldier during the siege of Beirut, discusses the causes of the carnage in 1982, why Israel may get stuck in Lebanon again as it fights Hezbollah, and the U.S. role in de-escalating the crisis.