Biden said the United States "will support a joint effort with our allies and partners to train Ukrainian pilots on fourth-generation fighter aircraft, including F-16s, to further strengthen and improve the capabilities of the Ukrainian Air Force," the official said.

"As the training takes place over the coming months, our coalition of countries participating in this effort will decide when to actually provide jets, how many we will provide, and who will provide them," they added.

Ukraine has repeatedly pushed for advanced Western jets to help counter Russia's more than year-long invasion of the country, but Kyiv's international supporters had balked at doing so until recently.

Earlier this week, UK Prime Minister Rishi Sunak and Dutch Prime Minister Mark Rutte pledged to build an "international coalition" to provide fighter jet support for Ukraine.

After visiting Sunak at his Chequers country estate outside London on Monday, Ukrainian President Volodymyr Zelensky said he was "very positive" about creating a "jets coalition" in his country's war with Russia.

Sunak said Monday that the UK was preparing to open a flight school to train Ukrainian pilots, and French President Emmanuel Macron also offered to do so but ruled out sending war planes to Kyiv.