South Korea's national security chief, Chung Eui-yong also told reporters at the White House that Kim has has pledged to refrain from further nuclear or missile tests.
A delegation of senior South Korean officials travelled to Pyongyang for talks with North Korean leader Kim Jong Un. He expressed his "firm will to vigorously advance" inter-Korean ties and pursue reunification
Talks between South Korea and North Korea are expected to focus on the North's missile stocks and relations with the US.
Western European security sources disclose photocopies of two Brazilian passports used by Kim Jong Un and his late father Kim Jong Il.
North Korean leader Kim Jong-un and his late father Kim Jong-il used fraudulently obtained Brazilian passports to apply for visas to visit Western countries in the 1990s, five senior Western European security sources tell Reuters.
Human trafficking is the only option for escape for many North Koreans.
Peace and diplomacy have taken a backseat as Pyongyang paraded its military
North Korean leader Kim Jong-un's influential sister to visit South
The breakthrough came as the first official high-level talks for over two years took place in the Demilitarised Zone on Tuesday.
North Korea and South Korea plan to reopen a dedicated communication hotline. The development came after North Korea responded positively to Seoul's invitation to talk about how the two countries could cooperate on the Winter Olympic Games due to take place in South Korea later this year.
Just a day after North Korea signaled it might send a delegation to the Winter Olympics, the South responded by offering high level talks on the border
North Korean leader declares all of the US mainland is now within range of his country's nuclear weapons.
North Korea has defied years of multilateral and bilateral sanctions and this latest standoff between the Washington and Pyongyang has raised fears of a new conflict on the Korean peninsula.
Pyongyang threatens to punish countries which supported a UN resolution imposing new economic restrictions.
Michal Huniewicz was one of a small group that went on a tour of North Korea in 2015, where he covertly took photographs from inside one of the most secretive nations in the world.
In a shift in Washington's policy towards North Korea, Rex Tillerson says he's "ready to talk any time"
Pyongyang slams a US military drill in the region as a provocation that could push the world to the brink of nuclear war.
The North Korean military in numbers
Russian Foreign Minister Sergei Lavrov has accused the US of trying to force North Korean leader Kim Jong Un to "fly off the handle" as a pretext to waging war
Pyongyang is a "worldwide threat" says Washington after testing a new missile which it claims can reach the continental United States.
President Trump accuses North Korea of sponsoring terrorism and adds it to a black list allowing for more sanctions
Dozens of worms found in North Korean soldier shot and injured during a dramatic escape to the South.
Focus on make-up rather than missiles as Kim Jong-un tours cosmetics factory
A formal agreement to end the Korean War could pave the way for broader diplomatic talks, writes Carl Bildt
While North Korea delivers heated anti-US rhetoric on an almost daily basis, hearing from the country's people is rare. NBC's Keir Simmons got the chance to do so, on a state-sponsored visit to a temple nestled in the mountains to the north of the capital, Pyongyang.
President Donald Trump's bellicose rhetoric on North Korea appears to have had the effect of stiffening people's resolve, with some North Koreans even believing they could survive nuclear conflict.