President Volodymyr Zelenskyy says a draft peace framework to end Russia's war envisages US security guarantees for Ukraine for 15 years, although he asked for more.

Speaking to reporters in a WhatsApp chat, President Zelenskyy added that he asked US President Donald Trump to provide guarantees of up to 50 years.

"Without security guarantees, realistically, this war will not end," he says.

The two leaders held talks at Mr Trump's Mar-a-Lago estate in Florida on Sunday insisting Ukraine and Russia are "closer than ever before" to a peace deal.

Speaking to reporters on Monday, Mr Zelenskyy also says a meeting with Russia would be possible only after US and European leaders agree on a Ukraine-proposed peace framework to end Moscow's war.

He says he hopes security guarantees for Ukraine would be provided by partners starting the moment Kyiv signed a peace deal.

Mr Zelenskyy held talks with Mr Trump in Florida, where the US leader said a deal to end the conflict is closer than ever.  (Reuters: Jonathan Ernst)

The Ukrainian leader also wants Kyiv to host a meeting with European and American officials in the "coming days" to work on documents to end the war with Russia.

"We want this meeting to take place, and I believe we will do everything possible for it to finally be held in Ukraine".

Another Putin-Trump call expected soon

Moscow says Russian President Vladimir Putin and US President Donald Trump held a phone call before Mr Trump's meeting in Florida with Mr Zelenskyy — and another call is planned very soon.

The Kremlin says it agrees with Mr Trump that talks to end the Ukraine war are in their final stage.

But the Kremlin also reiterated that Ukraine should withdraw its troops from the part of Donbas that it still controls if it wanted peace, and that if Kyiv did not strike a deal then it would lose yet more territory.

Russia currently controls about 90 per cent of the Donbas region.

Kremlin spokesperson Dmitry Peskov says there are no plans for a call between Mr Putin and Mr Zelenskyy.

Captured territory and nuclear plant among 'thorny issues'

Among the points of contention between Russia and Ukraine is how territory captured by either side in their near-four year war would be divided as part of a peace agreement.

Mr Zelenskyy said two main issues outlined in a 20-point peace proposal remained to be resolved: control of Ukraine's Zaporizhzhia nuclear power station, which is in Russian hands, and the fate of the Donbas area of eastern Ukraine.

"Two questions remain: the station — how will the station operate? — and the territory," Mr Zelenskyy told reporters on Monday.

Underlining how far apart Kyiv and Moscow are on territory, Mr Peskov said Ukraine must withdraw its troops from the small part of Donbas that it still controls, and that Kyiv would lose more land if it did not agree to a deal.

Mr Trump said after his talks with the Ukrainian president on Sunday that they were "getting a lot closer, maybe very close" to an agreement to end the war but that "thorny issues" were still there.

Reuters