The U.S. is halting some shipments of weapons to Ukraine amid concerns that its own stockpiles have declined too much, officials said Tuesday. The munitions were previously promised to Ukraine for use during its ongoing war with Russia under the Biden administration.

The move "was made to put America’s interests first," a White House spokeswoman said, as U.S. munitions have been depleted in recent years.

The decision was driven by the Pentagon’s policy chief, Elbridge Colby, and was made after a review of Pentagon munitions stockpiles.