Ukrainian President Zelenskyy addresses U.N. General Assembly

President of Ukraine Volodymyr Zelenskyy visits the Kharkiv region for the first time since Russia started the attacks against his country on February 24, in Kharkiv region, Ukraine on May 29, 2022.(Photo by Ukrainian Presidency/Handout/Anadolu Agency via Getty Images)

Ukrainian Presidency | Anadolu Agency | Getty Images

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UNITED NATIONS — Ukrainian President Volodymyr Zelenskyy is set to deliver dramatic remarks to world leaders Wednesday, hours after Russia moved to mobilize hundreds of thousands of troops for its monthslong assault on Ukraine.

Zelenskyy, who has not left his war-weary nation since Russia invaded in late February, will address world leaders virtually.

His pre-recorded remarks come as Russia’s war enters its eighth month with no apparent signs that the Kremlin is going to relinquish ambitions to erase Ukrainian sovereignty.

In his speech, Zelenskyy is expected to urge countries such as China, the world’s second-largest economy, to abandon its neutrality. He is also set to call for more Western arms and support.

Read CNBC’s live blog tracking developments on the war in Ukraine.