Washington and Kiev agreed on a 30-day truce in the Ukraine conflict on Tuesday

US President Donald Trump's special envoy Steve Witkoff will be traveling to Moscow later this week to deliver the US ceasefire proposal for the Ukraine conflict, White House Press Secretary Karoline Leavitt said on Wednesday.

US Secretary of State Marco Rubio and National Security Advisor Mike Waltz met with representatives from Kiev in Jeddah on Tuesday to discuss a diplomatic end to the Ukraine conflict. In a joint statement afterward, Ukraine agreed to a 30-day ceasefire, while the US resumed all military aid and intelligence sharing with Ukraine.

Waltz held a phone conversation with his "Russian counterpart" on Wednesday to discuss the proceedings, Leavitt told journalists in a media stakeout at the White House.

Trump's envoy will be traveling to Russia in person, she added.

"Steve Witkoff, the president's special envoy, is making his way to Moscow this week again to urge the Russians to sign on to this negotiation," Leavitt told Fox News on Wednesday.

Russia and the US will hold a "big meeting" on Thursday, Trump told reporters in the Oval Office.

When asked about potential US leverage on Moscow to accept the ceasefire deal, the US president warned of "devastating" financial measures he could impose.

Moscow is "carefully studying the statements that were made as a result" of the US-Ukraine talks, Kremlin spokesman Dmitry Peskov has said.

He cautioned against making rushed statements, and stressed that Russia first needs to receive "detailed information" on the proposed ceasefire teased by Waltz on Tuesday.

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Moscow has previously opposed any temporary truce in the Ukraine conflict, saying that it would simply be a repeat of the ill-fated 2014-2015 Minsk agreements, which it claims were used by Kiev's Western backers to rearm them.