
The decision was taken "to put America's interests first" and followed a Department of Defense review of US "military support and assistance to other countries", White House spokesperson Anna Kelly said on Tuesday.
The US has sent tens of billions of dollars in military aid to Ukraine since Russia launched its full-scale invasion in February 2022, leading some in the Trump administration to voice concerns that US stockpiles are too low.
The Ukrainian government has not commented on the announcement. US officials did not immediately say which shipments were being halted.