Andie Parry and Brian Carter



Information Cutoff: 2:00 pm ET

The IDF concluded a major, multi-day “counterterrorism operation” in the Nour Shams Refugee Camp, Tulkarm, on April 21. Israeli forces engaged Palestinian fighters in Nour Shams, killing 14 Palestinian fighters. The IDF Duvdevan unit arrested 15 wanted persons, destroyed two improvised explosive device manufacturing facilities and dozens of explosives, and seized ammunition during operations in the camp. Palestinian fighters wounded ten Israeli soldiers in the operation. Palestinian journalists reported that the IDF had killed a Palestinian Islamic Jihad (PIJ) commander in Tulkarm on April 19. The same PIJ commander attended the funeral of other Palestinian fighters killed in fighting in Tulkarm, confirming that the commander survived the Israeli operation.

Several Palestinian militias called for the mobilization of armed Palestinians across the West Bank in response to the IDF’s Nour Shams operation. Hamas, the Lions’ Den, the Palestinian Mujahideen Movement, and the al Aqsa Martyrs’ Brigades published statements calling for a mass uprising and armed retaliation against the IDF. Those Palestinian militias and others claimed 15 attacks on Israeli forces, Israeli settlements in the West Bank, and Israeli border towns on April 21.  PIJ’s Jenin Battalion conducted nine of the 15 attacks. PIJ said that they were responding to the Israeli raid in Nour Shams. Palestinians also conducted unclaimed attacks targeting Israeli checkpoints near Hebron and in the Jordan Valley. The timing of these unclaimed attacks suggests that they are in response to the calls for mobilization. An unspecified group planted an improvised explosive device near Ramallah on April 21. The fighters had connected the IED‘s detonator to a Palestinian flag so that when an Israeli attempted to remove the flag, the IED detonated.

Palestinians also participated in marches and a general strike on April 21 in response to the IDF’s Nour Shams operation. Hamas called for a general strike on April 21.

Key Takeaways:

• Gaza Strip: The IDF did not publish information about Israeli operations in the Gaza Strip on April 21. Palestinian militias claimed only one attack targeting Israeli forces in the Gaza Strip.

• West Bank: The IDF concluded a major, multi-day “counterterrorism operation” in the Nour Shams Refugee Camp, Tulkarm, on April 21. Several Palestinian militias called for the mobilization of armed Palestinians across the West Bank in response to the IDF’s Nour Shams operation.

• Lebanon: Lebanese Hezbollah has conducted at least six attacks from southern Lebanon into northern Israel since CTP-ISW's last data cutoff on April 20.

• Iraq: The Islamic Resistance in Iraq—a coalition of Iranian-backed Iraqi militias—claimed one drone attack targeting an unspecified site in the Golan Heights on April 20.

Click here to read the full update.

ISW and CTP has launched an interactive map of Israeli ground operations to accompany our daily campaign assessments of the Israel–Hamas war. This product complements the daily static maps that ISW-CTP produces with high-fidelity and, where possible, street-level assessments of the war in Israel.

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