Former National Security Council official Fionia Hill said Russian President Vladimir Putin is trying to distract efforts to reach peace by seeking to “sow chaos” in the U.S. electoral system.

Putin met with President Donald Trump in Alaska on Friday, which will be followed by Trump meeting with Ukrainian President Volodymyr Zelensky at the White House on Monday. Following his meeting with Putin, Trump told Fox News’s Sean Hannity in a one-on-one interview that mail-in voting was among the topics the two leaders discussed.