Donald Trump's campaign adviser Jason Miller has described the report by The Washington Post, in which the publication allegedly revealed details of Trump's "peace plan" for Ukraine, as fake news. 

Miller insisted in an interview with The New York Post that Trump will not commit to any peace plan until he takes office and can properly weigh all options.

"The whole thing is fake news from the Washington Post. They’re just making it up," said Miller, a Trump campaign adviser.

At the same time, he stressed that Trump is "the only one talking about stopping the killing". "Joe Biden is talking about more killing," Miller said, apparently referring to Biden's position to support Ukraine with weapons.

Trump, the presumptive Republican presidential nominee, has often boasted that he could negotiate a peace deal between Russia and Ukraine within 24 hours if elected. But he has repeatedly refused to publicly specify how exactly he would do this. 

The Washington Post, citing sources, reported that Trump is allegedly seeking to push Ukraine to make concessions to Russia and transfer Ukrainian territories, including Crimea and Donbas, under its control.

President Volodymyr Zelenskyy invited Trump to come to Ukraine. However, Trump declined, citing a "conflict of interest" with the current Joe Biden administration.