Since Hamas’s brutal attack against Israel on Oct. 7 and the resulting Israeli military campaign in the Gaza Strip, tensions and hostilities across the Middle East have reached fever pitch. And with such a complex regional crisis playing out, it should not come as a surprise that the Biden administration is reconsidering its military priorities in the region.

Since Hamas’s brutal attack against Israel on Oct. 7 and the resulting Israeli military campaign in the Gaza Strip, tensions and hostilities across the Middle East have reached fever pitch. And with such a complex regional crisis playing out, it should not come as a surprise that the Biden administration is reconsidering its military priorities in the region.

It should be cause for significant concern, however, that this could involve a full withdrawal of U.S. troops from Syria. While no definitive decision has been made to leave, four sources within the Defense and State departments said the White House is no longer invested in sustaining a mission that it perceives as unnecessary. Active internal discussions are now underway to determine how and when a withdrawal may take place.

Notwithstanding the catastrophic effect that a withdrawal would have on U.S. and allied influence over the unresolved and acutely volatile crisis in Syria, it would also be a gift to the Islamic State. While significantly weakened, the group is in fact primed for a resurgence in Syria, if given the space to do so.

The unprecedented international intervention launched in 2014 by the United States and more than 80 partner nations to defeat the terror group’s so-called territorial state was remarkably successful, with the final pocket of territory in Syria liberated in early 2019.

In Iraq, too, the Islamic State has almost vanished, degraded to such an extent that in 2023, it averaged just nine attacks a month—down from about 850 per month in 2014.

But the situation in neighboring Syria is more complex. With approximately 900 troops on the ground, the United States is playing an instrumental role in containing and degrading a persistent Islamic State insurgency in northeastern Syria, working alongside its local partners, the Syrian Democratic Forces (SDF).

Yet the threat remains. Early on Jan. 16, an Islamic State rocket attack was launched on an SDF-administered prison holding as many as 5,000 Islamic State prisoners, triggering a mass breakout........

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