Since Russia’s invasion of Ukraine on February 24, the United States has sent $3.4 billion worth of weaponry to Ukraine, including howitzers, Stinger anti-aircraft systems, Javelin anti-tank missiles, recently disclosed “Ghost” ammunition and drones.
Officials, speaking on condition of anonymity, said the latest package would likely include more ammunition for systems such as howitzers. The Pentagon claims to have already sent around 184,000 rounds of artillery.
The announcement could come as soon as the next 24 hours, two of the officials said.
The new tranche of arms transfers would come from the remaining $250 million of the Presidential Drawdown Authority, which allows the president to authorize the transfer of surplus weapons from US stockpiles without congressional approval in response to an emergency.
Last month, Mr. Biden proposed a $33 billion aid package for Ukraine, including more than $20 billion in military aid.
The United States has trained some Ukrainian forces in the use of systems such as howitzers outside Ukraine.
Group of Seven (G7) leaders, including Mr Biden, will hold a video call Sunday with Ukrainian President Volodymyr Zelenskiy in a sign of unity, the eve of Victory Day in Russia, the White House said.
Russian President Vladimir Putin presents the war in Ukraine as a battle to protect Russian speakers from Nazi persecution and to guard against what he calls the threat that NATO enlargement poses to Russia.
Ukraine and the West reject the allegation of fascism as baseless and claim that Putin is waging an unprovoked war of aggression.
Ukraine and its allies say that after failing to seize the capital, kyiv, Russian forces made slow progress in their aim to capture the east and south of the country, but the bombardment increasingly affected more civilians.
Russia denies these allegations and says it only targets military or strategic sites, not civilians.