13, citing sources familiar with the talks.U.S. national security adviser Jake Sullivan has held multiple conversations with Trump's incoming national security advisor Mike Waltz, focused on sharing information but not strategies for expected peace negotiations, sources told NBC News. A spokesperson for Trump's transition team confirmed that the two officials were in contact, adding that "the goal is for the world to understand there is a desire for the time of transition to be seen as a strong America, working for peace and stability around the world, until President-elect Trump is sworn in."Trump, who will be inaugurated on Jan. 20, has repeatedly suggested that he would end the war within 24 hours, but has so far refrained from detailing the specifics of his plan.