Mr Zelensky said he hopes to discuss whether the US plans to halt its military aid to Ukraine and, if so, whether Kyiv would be able to purchase weapons directly from the US.
Mr Zelensky has been vague on exactly what kinds of security guarantees would be suitable for his country, and while he continues to advocate for Ukraine's eventual membership in Nato, he has also suggested a similar security arrangement would suffice.
But Mr Zelensky has remained firm that specific assurances for Ukraine's security must accompany any agreement giving the US access to Ukraine's resources.
If a truce can be reached, British Prime Minister Keir Starmer and French President Emmanuel Macron have said they would send troops for a potential peacekeeping mission to Ukraine to ensure that fighting between Ukraine and Russia does not flare up again.
According to the preliminary economic agreement, seen by The Associated Press, the US and Ukraine will establish a co-owned, jointly managed investment fund to which Ukraine will contribute 50% of future revenues from natural resources, including minerals, hydrocarbons and other extractable materials.
