US intelligence reports continue to warn that Russian President Vladimir Putin intends to invade all of Ukraine and reclaim parts of Europe that belonged to the former Soviet empire.
The reports present "a completely different picture" than that presented by Donald Trump and his negotiators, who claim the Russian president aims to end the conflict.
They also contradict the Russian leader's denials regarding accusations that he poses a threat to Europe.
The US intelligence findings "are largely consistent with the views of European leaders and intelligence agencies" that Putin covets all of Ukraine and the territories of former Soviet bloc states, including NATO members, according to the sources.
"The intelligence has consistently shown that Putin wants more," Mike Quigley, a ranking Democrat on the House Intelligence Committee, said in an interview with Reuters.
"Europeans are convinced of this. Poles are absolutely convinced of this. The Baltic countries think they are first," he added.
Russia controls about 20% of Ukrainian territory, including most of Lugansk and Donetsk, parts of Zaporizhia and Kherson regions, and all of Crimea.
Putin claims Crimea and the four provinces belong to Russia. Trump is pressuring Kiev to withdraw its forces from the small part of Donetsk that it still controls as part of a proposed peace deal.
On Friday, Putin, while declaring he was ready to discuss peace, said his conditions would have to be respected, claiming his forces have advanced 6,000 square kilometers this year.