President Obama says the United States and South Korea are determined to stand firm against North Korean threats and that the days of Pyongyang manufacturing a crisis to get international concessions "are over."
In a joint news conference with South Korean President Park Geun-hye on Tuesday, Obama said the two leaders "very much share the view that we are going to maintain a strong deterrent" against North Korea.
"We're not going to reward provocative behavior, but we remain open to the prospect of North Korea taking a peaceful path," he said.
Sokeel Park sees the effects of North Korea's repressive government every day. He lives in South Korea, but works for an NGO named Liberty in North Korea. His job is to debrief those who've managed to leave the North and help them start new lives in the South.
Park says that with so much focus on the country's nuclear weapons and leadership, it's easy to forget about the 24 million people going about their everyday lives. Those lives are heavily controlled by the North Korean government, citizens are told where to work, where to live, and are not allowed to leave.