Chile's president-elect José Antonio Kast will arrive in Buenos Aires tomorrow, December 16, for his first official visit as the elected leader of Chile, according to a confirmation posted on X during the reporting window ending at 7:17 PM UTC on December 15. The visit positions Argentina as the initial stop in Kast's international engagements following his election, with the X post by @agusantonetti describing it as the start of a historic alliance in the Southern Cone region between Argentina and Chile. No additional details on the itinerary or meetings were provided in the source posted between 4:17 PM and 7:17 PM UTC on December 15.