WASHINGTON —

Secretary of State Marco Rubio met with Ukrainian leaders in Europe to address concerns in the Trump administration's peace plan to end the nearly four-year war between Russia and Ukraine, which has drawn criticism from both Democrats and some Republicans, as well as Kyiv.

President Donald Trump initially set a deadline for Ukraine to accept his peace proposal by Thursday, but Rubio downplayed this deadline after meeting with Ukrainian officials over the weekend.

"It is probably the most productive day we have had on this issue, maybe in the entirety of our engagement, but certainly in a very long time," Rubio said.

Fabrice COFFRINI / AFP via Getty Images U.S. Secretary of State Marco Rubio holds a press conference following closed-door talks on a U.S. plan to end the

See Full Page