Secretary of State Marco Rubio is saying that the U.S. Is ready to “move on” from peace talks between Ukraine and Russia, if there is no clear progress in the coming days, telling reporters, "We’re not going to continue with this endeavor for weeks and months on end.

Rubio sought to ramp up the pressure on Moscow during a call with Russian Foreign Minister Sergey Lavrov on Thursday, according to officials familiar with the conversation, who add that the administration was hopeful progress could be made in the hours between their talk and the secretary's departure from France.