President Obama spoke privately Sunday with Russian President Vladimir Putin during an international summit in Peru.

The world leaders spoke during a break in a roundtable discussion at the APEC Summit meeting.

Obama, who leaves office in January, was seen saying “OK,” then shaking hands with Putin before returning to his seat.

White House sources told Fox News the leaders talked informally for about four minutes. They said Obama urged Putin to uphold his country’s commitments under the so-called Minsk agreements, which attempts to stop the military fighting between pro-Russian rebels and Ukrainian forces along the Russia-Ukraine border.

Obama also purportedly talked to Putin about international diplomatic efforts to stop the bloodshed and destruction in Syria’s years-long civil war.