The United States will sell Ukraine up to $138 million worth of equipment to maintain and upgrade its HAWK air defence systems to help defend against Russian drone and cruise missile attacks, a U.S. State Department official told Reuters.The US began shipping HAWK interceptor missiles to Ukraine in 2022 as an upgrade to the shoulder-launched Stinger air defence missile systems – a smaller, shorter-range system.Since then, Ukraine has received several air defence systems, including the US-made Patriot system.Tuesday’s emergency foreign military sale is worth as much as $138 million, the official said, speaking on condition of anonymity.Although Ukraine has run out of many sources of U.S. funds, Kyiv was given a grant of $300 million in foreign military financing as part of the annual defence spending bill recently signed into law. The grant money will be used to pay for the equipment, which includes engineering and integration for communications and refurbishment of HAWK fire units.