North Korean leader Kim Jong Un, right, and Choe Ryong Hae, vice-chairman of the central committee of the Workers' Party, Photo: Wong Maye-E/AP

The Pentagon reported B-1B bombers from Guam and F-15 fighter escorts from Okinawa, Japan, have flown over the waters of east North Korea, the "farthest north of the Demilitarized Zone...any American fighter or bomber has flown this century," the Associated Press reports.

Why it matters: Dana White, Defense Department spokeswoman, said it was a "demonstration of U.S. resolve and a clear message" that Trump "has many military options to defeat any threat."

Go deeper: The psychological profile of Kim Jong-un, and how he and his "massive ego...reacts harshly and sometimes lethally to insults and perceived slights."

Go deeper

Post-debate poll finds Biden strong on every major issue

Joe Biden speaks Friday about "The Biden Plan to Beat COVID-19," at The Queen theater in Wilmington, Del. Photo: Drew Angerer/Getty Images

This is one of the bigger signs of trouble for President Trump that we've seen in a poll: Of the final debate's seven topics, Joe Biden won or tied on all seven when viewers in a massive Axios-SurveyMonkey sample were asked who they trusted more to handle the issue.

Why it matters: In a time of unprecedented colliding crises for the nation, the polling considered Biden to be vastly more competent.

Bryan Walsh, author of Future
3 hours ago - Science

The murder hornets are here

A braver man than me holds a speciment of the Asian giant hornet. Photo: Karen Ducey/Getty Images

Entomologists in Washington state on Thursday discovered the first Asian giant hornet nest in the U.S.

Why it matters: You may know this insect species by its nom de guerre: "the murder hornet." While the threat they pose to humans has been overstated, the invading hornets could decimate local honeybee populations if they establish themselves.