WASHINGTON (AP) — President Donald Trump and Defense Secretary Jim Mattis spoke on Saturday with their South Korean counterparts after the historic meeting between leaders of the two Koreas, and Trump said "things are going very well" as he prepares for an expected summit with the North's Kim Jong Un.

Mattis and Defense Minister Song Young-moo said they were committed to "a diplomatic resolution that achieves complete, verifiable and irreversible denuclearization" of the North, according to the Pentagon's chief spokeswoman, Dana W. White. Mattis also reaffirmed "the ironclad U.S. commitment" t...