Incoming national security adviser Mike Waltz spoke Sunday about the state of the Ukraine war and how negotiations for an end to the nearly three-year conflict may play out as the second Trump administration begins in just eight days.

In an appearance on ABC News’s This Week, Waltz addressed President-elect Donald Trump’s comments last week that a meeting with Russian President Vladimir Putin is being set up, saying that “preparations are underway.” While no framework has been established, including whether Ukrainian President Volodymyr Zelensky will be included, Waltz said he is expecting a call first between the leaders in the “coming days and weeks.”