In a significant escalation of regional counter-terrorism efforts, the Royal Jordanian Air Force has joined U.S. Central Command (CENTCOM) in a massive kinetic operation against Islamic State (ISIS) strongholds in central and southern Syria. The strikes, launched Friday, serve as a direct retaliatory response to the December 13 “insider” attack near Palmyra that claimed the lives of three U.S. citizens. This joint operation underscores the fragile security landscape exactly one year after the collapse of the previous Syrian regime and the ongoing efforts of the interim administration to consolidate territorial control.
Operational Metrics and Strike Scope
According to official military briefings and field reports, the scale of the retaliation reflects a strategic objective to dismantle the “shadow governance” ISIS has attempted to establish in the Syrian desert (Badiya).
- Strike Intensity: U.S. Central Command (CENTCOM) confirmed that fighter jets, attack helicopters, and artillery neutralized over 70 targets across the Homs and Deir ez-Zor governorates.
- Neutralization Totals: The Syrian Observatory for Human Rights (SOHR) has documented at least five fatalities, including a high-ranking tactical commander of an ISIS sleeper cell.
- Operational Tempo: In the six months leading up to December 2025, the U.S. and its partners have executed more than 80 counter-terrorism operations. Since the Dec. 13 incident alone, 10 high-intensity missions have resulted in the death or detention of 23 operatives.
- Coalition Scale: The Global Coalition to Defeat Daesh now comprises 90 partner nations, with the newly formed Syrian interim government officially joining the collective earlier this year.
The Palmyra Breach and the Insider Threat
The catalyst for this escalation was a security failure during a diplomatic engagement near the historic city of Palmyra. The assailant, a guard recently integrated into Syria’s internal security forces, opened fire during a joint luncheon between U.S. and Syrian officials.
The Geopolitical Drivers:
- Transition Vulnerabilities: The incident highlights the “insider threat” inherent in the rapid restructuring of Syria’s security apparatus. The assailant was under investigation for ISIS sympathies at the time of the attack, suggesting gaps in the vetting protocols of the Syrian Interim Government.
- Jordanian National Security: For the Jordanian Armed Forces, the strikes in southern Syria are a defensive necessity. Amman views the resurgence of ISIS in the Badiya desert as a direct threat to its northern border, particularly regarding weapons smuggling and extremist infiltration.
- The Sharaa-ISIS Enmity: President Ahmad al-Sharaa, while leading a transition away from the country’s previous autocratic structure, faces a dual challenge: maintaining U.S. support while combating an ISIS insurgency that labels his administration as “apostate.” This ideological friction has led to increased targeting of Syrian state soldiers, including a recent fatal ambush in Idlib province.
Security Risks and Strategic Outlook
The joint U.S.-Jordanian response signals that the international community will not tolerate the re-emergence of a territorial “Caliphate.” However, military analysts warn of significant structural risks as the conflict shifts into 2026.
- Vetting Challenges: Experts note that as former insurgents are integrated into official state security roles, the risk of radicalized elements remaining within the ranks is high. The Palmyra shooting serves as a “proof of concept” for ISIS’s infiltration strategy.
- Strategic Overextension: While kinetic strikes degrade ISIS’s physical capabilities, the group’s shift to decentralized guerrilla warfare in the Syrian desert makes it difficult to achieve total eradication through airpower alone.
- Political Legitimacy: The United Nations Security Council continues to monitor the interim government’s ability to provide internal stability. If the Sharaa administration cannot secure its own bases, the reliance on foreign air intervention—such as the RJAF and USAF—will likely increase, potentially complicating domestic optics for the new government.
Conclusion: The Dec. 19-20 strikes have successfully disrupted immediate ISIS operations in central Syria. However, the Palmyra assassination underscores that the primary threat to Syrian stability has moved from the battlefield to the very institutions designed to protect the state. Ongoing vigilance and enhanced counter-intelligence cooperation between the U.S., Jordan, and Syria will be required to prevent further “insider” escalations.
