S.Korea to work with US and N.Korea after failed nuclear talks

South Korea will work with the United States and North Korea to ensure they reach agreement on denuclearization, the South's president said on Friday, a day after talks between the US and North Korean leaders collapsed over sanctions.

A second summit between US President Donald Trump and North Korean leader Kim Jong Un, in Vietnam, was cut short after they failed to reach a deal on the extent of sanctions relief North Korea would get in exchange for steps to give up its nuclear program.