Dan Ronan

It is the latest attack on vessels in the waterway since the shaky ceasefire between the U.S.

and Iran.

The National Transportation Safety Board is investigating how a man got onto an active runway late Friday night at Denver International Airport.

He was hit and killed by a Frontier Airlines jet that was taking off.

Flight 4345 with 231 people on board was departing for Los Angeles.

Air traffic controllers were notified there was a man on the runway.

I'm Dan Ronan, NPR News in Washington.

Every single complex society that has ever existed in the history of the world so far has collapsed.

Do we think we're different?

Live from NPR News in Washington, I'm Dan Ronan.

Iran's Revolutionary Guard is warning it will conduct a heavy assault on an American base in the Middle East if any Iranian oil tankers or commercial vessels are attacked.

The latest statement from Iran on state-run television came a day after U.S.

struck two Iranian oil tankers in the Strait of Hormuz.

Regarding the negotiations, Iran is reviewing a Trump administration proposal.

Mirzad Brozadi is the vice provost at the Missouri University of Science and Technology.

Meanwhile, nearby Bahrain said it arrested dozens of people linked to Iran's Revolutionary Guard.

Bahrain is the host nation for the U.S.

Navy's regional headquarters.

Passengers on a cruise ship that was struck by the hantavirus are set to disembark in the Canary Islands on Sunday, then head home.

Health officials say it is not spreading like COVID-19, but warn the U.S.