Yuriy Sak, a political adviser to Ukraine's Ministry of Strategic Industries, tells BBC Radio 4's World at One programme that the Kyiv delegation went to Saudi "in the hopes that this will bring us closer to ending the war and demonstrate to our American partners we are serious".

U.S. and Ukrainian officials were to meet in Saudi Arabia on Tuesday for talks aimed at mending ties and gauging if Ukraine is willing to make concessions under President Donald Trump's push to end Russia's war with Ukraine swiftly.

Let me just start off by asking you, what concessions do you think the US team are looking for out of the Ukraine delegation and how do you think that ties in to the conversation that President Zelensky may have had with the MBS yesterday?