Ukraine and the US have reached an agreement on a framework for a broad economic deal that would include the exploitation of rare earth minerals, three senior Ukrainian officials have said.
The officials, who were familiar with the matter, spoke on condition of anonymity because they were not authorised to speak publicly.
One of them said that Kyiv hopes that signing the agreement will ensure the continued flow of US military support that Ukraine urgently needs.
There was no immediate response to a request for comment from the administration of US President Donald Trump.
The agreement could be signed as early as Friday and plans are being drawn up for Ukrainian President Volodymyr Zelensky to travel to Washington to meet Mr Trump, according to one of the Ukrainian officials.
Another official said the agreement would provide an opportunity for Mr Zelensky and Mr Trump to discuss continued military aid to Ukraine, which is why Kyiv is eager to finalise the deal.