Axios

In this photo from Nov. 21, 1951, sixth-grade students crouch under or beside their desks — along with their teacher, Vincent M. Bohan — as they act out a scene from the Federal Civil Defense Administration film "Duck and Cover" at Public School 152 in Queens, New York.

Why it matters: For some baby boomers, North Korea's nuclear advances and Trump's response have prompted flashbacks to a time when they were young, and when they prayed each night that they might awaken the next morning, AP pointed out this summer. For their children, the North Korean crisis is a taste of what the Cold War was like.

Save this tape: "North Korea's deputy U.N. ambassador warned ... that the situation on the Korean peninsula 'has reached the touch-and-go point and a nuclear war may break out any moment.'" (AP)

• N.Y. Times, from Seoul: "The United States military said ... that it would practice evacuating noncombatant Americans out of South Korea ... It has conducted similar evacuation exercises for decades."
• "But with fears rising in the South that the United States might be preparing for military action against the North, the American military issued a rare news release ... stressing that [it] was a 'routinely scheduled' drill. The drill, known as Courageous Channel, is scheduled from next Monday through Friday."

The U.S. envoy to North Korea, Joseph Yun, is going to Seoul this week to meet with South Korea's top nuclear envoy, Lee Do-hoon, a State Department spokesperson confirmed to Axios. Lee was just appointed last month, and it will be their first meeting.

Backdrop: The meeting comes in advance of Trump's visit to the region next month, and as U.S.-South Korean naval drills are further ramping up tensions in the region. The North Korean regime interprets the drills as rehearsal for invasion, and could respond with provocative measures. Just today a North Korean official said Pyongyang won't come engage in diplomacy until it can hit the East coast of the U.S. with a nuke.

A North Korean official told CNN the regime first wants to develop an intercontinental ballistic missile capable of going "all the way to the East coast of the mainland U.S." before engaging in diplomacy. North Korea isn't ruling out diplomacy, but it wants to maximize its leverage before coming to the bargaining table.

Go deeper: What North Korea wants from the U.S. ... North Korea is prepping nukes. It's far from finished