A Ukraine ceasefire could be a while away yet, according to one expert.

Ukraine's agreed to a US-proposed 30-day ceasefire with Russia, after Washington and Kyiv officials held talks in Saudi Arabia today.

Curtin University associate professor, Alexey Muraviev, says the US would need to make some significant compromises for Russia to consider it.

He explained that's what it would take for Vladimir Putin to be able to sell the idea.

"If it's going to be just a case of showing goodwill - I think Putin would be damaging his own reputation in the eyes of the people he was trying to sell this war to." 

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