North Korea challenges Donald Trump's explanation of the collapse of his summit with Kim Jong Un

President Trump was back in Washington on Friday morning, facing conflicting accounts of why his summit with North Korean leader Kim Jong Un broke down. The president said he walked away from the table because Kim wanted complete sanctions relief. But in a rare press conference overnight, North Korean officials said they only wanted some sanctions lifted.

CBS News correspondent Errol Barnett reports that on his way back to Washington, the president made a refueling stop in Alaska and thanked U.S. service members at an Air Force base, but he...