US President Joe Biden and his South Korean counterpart Moon Jae-in have held a summit at the White House.
The two leaders discussed the denuclearization of North Korea, among other issues.
At the start of their talks on Friday, Biden said the two countries' history of cooperation is vital to maintaining peace and stability in a critical region of the world.
Moon said South Korea will work closely with the US to realize the complete denuclearization of the Korean Peninsula.
The Biden administration recently completed a review of US policy on North Korea, opting for a practical approach that explores the option of diplomacy.
Pyongyang did not respond to the possibility of talks.
Moon and Biden are believed to have also discussed how to counter China's growing influence.
Biden is apparently keen to solidify ties with Washington's Asian allies.
Moon is the second foreign leader to meet him at the White House, following Japanese Prime Minister Suga Yoshihide.