North Korea’s government has just reopened a hotline with South Korea — a direct line between Kim Jong-un and South Korea’s president, Moon Jae-in. That’s not the only friendly gesture coming out of North Korea, which is also dangling the possibility of formally ending war between the two countries — a conflict technically still ongoing since the 1950s. Why the sudden warmth from Kim and what does this mean for the United States? The World’s Patrick Winn is on the line.