U.S., Ukrainian and European officials gathered in Switzerland on Sunday for talks on the contentious American-Russian peace plan put to Kyiv this week.

Marco Rubio says Ukraine war discussions have entered productive phase as negotiators refine comprehensive peace plan covering ceasefire and settlement terms.

Rubio hails ‘tremendous progress’ but Europe demands changes to Trump’s peace plan - Rubio says changes expected in pro-Russian peace plan to add something Ukraine can support

The Office of the President of Ukraine said in a statement on social media Saturday that "consultations on steps to end the war will take place in the coming days."

Trump defended the framework Friday, arguing that if Ukraine didn’t agree to it, “they will lose in a short period of time.” The president also insisted that his Russian counterpart, Vladimir Putin, is “not looking for more war” once the Ukraine conflict is settled.

President Donald Trump has given Ukraine less than a week to accept his plan to end the war with Russia, which is widely seen as favoring Moscow. Follow for live updates.

Virginia Democrat Sen. Mark Warner spoke out against President Trump's latest proposal to end the war in Ukraine during an interview with Shannon Bream on "FOX News Sunday." SHANNON BREAM, FOX NEWS: Okay,

Steve Witkoff, Jared Kushner and other administration representatives met Russian envoy Kirill Dmitriev to draft the peace plan, which came as a surprise to U.S. officials at home and abroad.

Secretary of State Marco Rubio, held a solo press conference in Geneva, Switzerland Sunday and provided an update on the ongoing talks to end the war In Ukraine. He said there has been “tremendous progress” in the negotiations but declined to provide details on the obstacles that remain.

GOP Senator Eric Schmitt of Missouri told "FOX News Sunday" that President Trump's hope to end the war in Ukraine is an expression of the American people's frustration with the, "Wilsonian adventurism that's dominated permanent Washington for the last 30 years under the guise that America can be everywhere all at once all the time.