The world is rightfully seized with alleviating suffering in Gaza—where famine conditions have recently been confirmed—and ending a devastating conflict that has displaced more than 1.9 million and left 1.7 million children needing humanitarian assistance. The crisis in Gaza is deadly, but it is also one of many. Other catastrophes across the world are killing thousands and generating threats that undermine US interests.

From our own Hemisphere to the Middle East, several other conflicts are either in full swing, such as Sudan, or in a post-war yet still highly volatile stage, like Syria. As in Gaza, suffering is surging among the most vulnerable in these places—and American interests are at risk.

President Trump has made it clear that the United States will prioritize America’s interests when determining whether and how to engage abroad. This is a sensible position. Resources are finite, and not all crises are created equal. Yet there are three more specific cases where more international attention as well as US involvement are warranted—not only since saving lives is the right thing to do, but also because such destabilizing crises enable threats like diseases, migration, and terrorism that do not respect borders and could, if neglected, harm American citizens and interests.

Since Sudan’s civil war began nearly three years ago, more than 150,000 people have died. The fighting has displaced more than 11 million Sudanese, with 3.9 million crossing into neighboring countries. Conflict-forced migration into neighboring South Sudan, Ethiopia, and Chad is stressing these countries’ resources and risks exacerbating conflict across the region. Much of Sudan has........

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