The Kremlin has repeatedly said arms shipments to Ukraine from allies prolong the conflict Moscow started and raise the risk of escalation. The U.S. confirmed this week it had paused supplying some arms to fight Russian aggression.

The suspension includes air defense interceptors, and it will directly affect Ukraine’s ability to fend off escalating Russian air assaults.

Officials say a Ukrainian drone has struck an industrial plant deep inside Russia, injuring several people and causing a fire.

The White House cited Pentagon concerns that some American arms stockpiles were dwindling too low. Among the affected weapons were air defense systems, bombs, missiles and artillery rounds.