Rubio says US ready to 'move on' within days if no progress made on Russia-Ukraine peace deal

U.S. Secretary of State Marco Rubio warned that the U.S. could "move on' from trying to broker a Russia-Ukraine peace deal if peace doing so do does not appear to be possible.

But Rubio noted that the U.S. will help if either or both sides are "serious about peace." Alex Nitzberg is a writer for Fox News Digital.

"If it's not gonna happen, then we're just gonna move on," Rubio declared.