The Ukrainian military remains hugely reliant on US weapons to fight Russia's invasion and Mr Zelenskyy has made clear he would want an American element in any international security force that might be agreed upon to monitor a ceasefire - even though this is a role the US appears reluctant to fill and the Kremlin has said would be "unacceptable".
The US has already reportedly tried to make Ukraine sign away a large portion of its natural resources to pay for US support - an uncomfortable offer that Mr Zelenskyy has so far declined but an indication of the new transactional approach to US foreign policy.
Mr Trump has repeatedly vowed to end Russia's war in Ukraine - even claiming during the US election campaign that he would do this within 24 hours.
It means Mr Trump has significant leverage over his Ukrainian counterpart which he will surely use to try to force through negotiations even on terms less favourable to Kyiv.
Volodymyr Zelenskyy, the Ukrainian president, has consistently warned that Kyiv must have a seat at the negotiating table for any discussions about ending Vladimir Putin's war to have a chance of success.
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