This page is subject to the extended confirmed restriction related to the Arab-Israeli conflict.The Lions' Den (Arabic: عرين الأسود, romanized: ʿArīn al-ʾUsud) is a Palestinian militant group operating in the Israeli-occupied West Bank.

Following the killing of an Israeli soldier on 11 October 2022, for which the Lions' Den claimed responsibility, Nablus is under a tight siege which Palestinians protest as collective punishment.

[12][13] The group has experienced a rise in popularity among Palestinians in the West Bank, regularly sharing videos of their attacks on TikTok and Telegram.

[15][16]Lions' Den was first identified by Palestinian media in August 2022, when it claimed responsibility for an attack on IDF soldiers in Rujeib, West Bank.

[20] In late September, shots were fired at the Israeli settlement of Har Bracha and a nearby military post, and the Lions' Den claimed responsibility.

[25] An IDF raid on 5 October to find the suspects of the earlier attacks resulted in the arrest a member of the group and one militant being killed.

Protests erupted in the town of Nabi Saleh hours after the raid, resulting in a Palestinian man being killed by Israeli soldiers.

[30] The initial targets were Lions' Den members Husam Bassam Isleem (24) and Muhammad Omar “Juneidi” Abu Bakr (23), who were shot and killed.

[31] Following the assassinations in February 2023, Lions' Den executed one of their members for allegedly sharing information with the Israeli security services that led to the deaths of several leaders of the group.