KYIV, Ukraine -- KYIV, Ukraine (AP) — President Donald Trump on Sunday claimed Ukrainian President Volodymyr Zelenskyy “hasn’t read” a U.S-authored peace proposal aimed at ending the Russia-Ukraine war.

The comments from Trump's oldest son are a sign of growing frustration over the failure of the Ukraine peace efforts to end the war

Ukraine delivered its response to the latest US-drafted peace proposal aimed at ending the war with Russia to the Trump administration on Wednesday, US and Ukrainian officials told CNN, as the contours of a tenuous potential deal take shape and the US president continues to make clear he wants the conflict resolved quickly.

President Donald Trump is optimistic about the peace talks between Russia and Ukraine, he revealed on Air Force One on Tuesday night. The commander-in-chief told reporters that the scrutinized 28-point peace plan has been 'very favorably solved,

Ukraine's Zelensky said he cannot cede land to Russia as he has no legal or moral right to do so. Follow Newsweek's live coverage.

Washington: US President Donald Trump on Thursday issued a stark warning that the prolonged Russia-Ukraine conflict risks escalating into a global conflict, cautioning that "things like this end up in third world wars."

United States President Donald Trump has warned that the ongoing Russia-Ukraine conflict could potentially snowball into a "third world war".

White House Press Secretary Karoline Leavitt told reporters earlier on Thursday that the President was "extremely frustrated" with both Russia and Ukraine and remained unwilling to engage in "meetings just for the sake of meeting".

Zelensky has responded to the mounting pressure, reiterating that Ukraine will not concede land to its “aggressor.”

The Kremlin has described Ukraine’s push to join NATO as one of the “root causes” of the conflict. U.S. President Donald Trump has ruled out Ukrainian membership in the Western defensive alliance. Zelensky is searching for compromises that could secure a peace deal to end Russia’s ongoing invasion.