Hyeonseo Lee escaped North Korea to the South, speaking to Daybreak's Richard Gaisford she said that most Koreans "don't know the truth".
She added that many people living in North Korea think the actions of their leaders are necessary because of the propaganda they believe.
Through her tears, a North Korean woman told me how she had to escape: risk death while running across the border or die of starvation.
Memories of the Korean war are never far away in South Korea, where residents have grown used to living with the constant threat of war.
North Korea said it will withdraw workers from the Kaesong factory park run jointly with South Korea and suspend all operations there.