The Pentagon has provided Ukraine with thousands of Iranian-made weapons seized before they could reach Houthi militants in Yemen, U.S. officials said Tuesday. It’s the Biden administration’s latest infusion of emergency military support for Kyiv while a multibillion-dollar aid package remains stalled in the Republican-led House.

The weapons include 5,000 Kalashnikov rifles, machine guns, sniper rifles and rocket-propelled grenades, along with a half-million rounds of ammunition. They were seized from four “stateless vessels” between 2021 and 2023 and made available for transfer to Ukraine through a Justice Department civil forfeiture program targeting Iran’s Islamic Revolutionary Guard Corps, according to U.S. Central Command, which oversees military operations in the Middle East.

Officials said Iran intended to supply the weapons to the Houthis, who have staged a months-long assault on commercial and military vessels transiting off the Arabian Peninsula. Central Command said the cache is enough to supply rifles to an entire Ukrainian brigade, which vary in size but typically include a few thousand soldiers.