We've just heard from Yuri Sak, adviser to Ukraine's ministry of strategic industries, who has been speaking to BBC Radio 4's Today programme.

Sak says that a minerals deal was initially Ukraine's idea: "We included it in our victory plan earlier, which was presented by our president to the US and the rest of our partners in 2024."

Asked how he views the shift to a more transactional relationship between the US and Ukraine, Sak says "we are staying pragmatic".

Very soon we'll get used to the very unusual nature of this negotiating process. At the same time, we are not a nation of freeloaders, we understand that this war has lasted for three years and the time has come to switch to a slightly different narrative."

Details on the minerals deal are currently vague, but sounds like it is "very heavily" in Washington's favour, one White House reporter has been telling BBC Radio 5 Live.

The Washington Examiner's Naomi Lim explains: "I think that's what Zelensky was initially opposed to when this deal was originally brought to him by the Treasury Secretary Scott Besant."

But, she says, that "with this war of words" between Zelensky and Trump, "Zelensky is now coming to the table, I think with this idea that security is still to be discussed".

Lim says it also depends on what Russia says and what the Kremlin comes to the table with in terms of its own rare earths minerals deal.

She adds that it is likely the deal could include:

• Long-term financial "commitment, arrangement, partnership" between the US and Ukraine
• Ukraine would contribute 50% of its revenue from minerals, oil and gas infrastructure and ports into an investment fund
• The fund could be co-managed by the US, with the US having 100% interest in it.

(Source: BBC)