Did you know North Korea and China are still technically at war with South Korea and the U.S.? That’s because the Korean War ended in 1953 with an armistice agreement, not a peace treaty. Today, the border between North Korea and South Korea remains one of the most tense and dangerous in the world. AJ+’s Dena Takruri takes you inside the demilitarized zone between the two countries, known as the DMZ, where war could break out at any moment.