One of the officials said a portion of the package, expected to be $1.725bn, would come from a fund known as the Ukraine Security Assistance Initiative (USAI), which allows President Joe Biden’s administration to get weapons from industry rather than from US weapons stocks.

The USAI funds would go towards the purchase of a new weapon, the Ground Launched Small Diameter Bomb (GLSDB), which has a range of 150km (94 miles).

The longer range of the GLSDB glide bomb could allow Ukraine to hit targets that have been out of reach and help it continue pressing its counterattacks by disrupting Russia further behind its lines.

The GLSDB is GPS-guided, can defeat some electronic jamming, is usable in all weather conditions, and can be used against armoured vehicles. Additionally, the GBU-39 bomb, which would function as the GLSDB’s warhead, has small, folding wings that allow it to glide more than 100km (60 miles) if dropped from an aircraft.

The USAI funds would also be used to buy more components of HAWK air defences, counter-drone systems, counter artillery and air surveillance radars, communications equipment, PUMA drones, and spare parts for major systems like Patriots and Bradleys.

There was also a significant amount of medical equipment — enough to equip three field hospitals. In addition to the USAI funds, more than $400m worth of aid was expected to come from Presidential Drawdown Authority funds, which allows the president to take from current US stocks in an emergency. That aid was expected to include mine-resistant ambush-protected vehicles (MRAPs), guided multiple launch rocket systems (GMLRS) and ammunition.

The US has sent security assistance worth approximately $27.2bn to Ukraine since Russia’s invasion on February 24 last year. Russia calls the invasion a special operation.