As Ukraine's Western allies warn their production lines were struggling to keep up with the rate at which Ukraine was using ammunition, the United States has sent roughly 1.1 million bullets seized from Iran to Ukraine.
The US Central Command, which oversees operations in the Middle East, says the rounds were confiscated from an Iranian stateless ship bound for Yemen in December 2022.
Iran backs the Houthi rebels in Yemen's ongoing civil war, but arms transfers to the group are barred under a 2015 resolution by the UN Security Council.
The civil war in Yemen began in 2014 when the Houthis took control of the capital Sanaa and removed the country's government.