US, North Korea offer dueling accounts of talks breakdown

Artworks featuring U.S. President Donald Trump and North Korean leader Kim Jong Un are displayed at a gallery Thursday in Hanoi, Vietnam. (AP Photo/Vincent Yu)

President Donald Trump speaks as Sec. of State Mike Pompeo looks on during a news conference after a summit with North Korean leader Kim Jong Un, Thursday in Hanoi, Vietnam. (AP Photo/ Evan Vucci)

HANOI, Vietnam — In open dispute, the U.S. and North Korea offered contradictory accounts Thursday of why the summit between Donald Trump and Kim Jong Un broke down, though both pointed to punishing American sanctions as a sticking point in the high-stakes nuclear negotiation.