North Korea has a last chance to engage in dialogue with the outside world, South Korean President Moon Jae-in said Monday during a meeting with former U.S. leader Barack Obama, Moon's office said.

Obama is visiting Seoul this week to speak at a forum hosted by South Korea's Chosun Ilbo newspaper, where, earlier Monday, he said North Korea's pursuit of nuclear weapons had "done nothing to secure the North Korean people."

Moon later briefed Obama on his summit with incumbent U.S. President Donald Trump last week, an aide at South Korea's presidential Blue House, Yoon Young-chan, told a media briefing.