Russian President is reminding the world that his country has been powerful for a long time.

The Russian state nuclear agency Rosatom this week released 59-year-old video footage of the world’s largest hydrogen bomb being tested. The so-called “Tsar Bomba” was exploded above the Arctic Circle in October 1961.

The footage was classified for decades, but the bomb test was hardly a secret.

Soviet Premier Nikita Khrushchev announced the test was coming at a Soviet Communist Party gathering in Russia in early fall 1961.

“If we happen to explode it in the wrong place, we might break our own windows,” he said.

Russia releases long-secret footage of largest-ever hydrogen-bomb test, the mammoth 'Tsar Bomba'

A 1961 Associated Press illustration shows how much damage the “Tsar Bomba” would cause if detonated in Washington, D.C. (The Oregonian)

In the days that followed, the U.S. government urged the U.S.S.R. to cancel the test. “Such an explosion could only serve some unconfessed political purpose,” the White House said in a statement.

After Khrushchev went ahead with the test, U.S. news outlets reported that the “monster ’K’ bomb set off by Russia” was the “dirtiest ever exploded by man. Air Force air samplings show that the 30- to 40-megaton weapon has polluted the atmosphere with more than 2,000 pounds of radioactive materials.”

The Associated Press put out a map showing what such a bomb would do if the White House were the target. The blast “would dig a hole 400 feet deep and a mile-and-a-half wide, killing nearly everyone in the area.”

Russia releases long-secret footage of largest-ever hydrogen-bomb test, the mammoth 'Tsar Bomba'

In this May 21, 1956, file photo, the fireball of a hydrogen bomb lights the Pacific sky a few seconds after the bomb was released over Bikini Atoll. This bomb was much smaller than the one detonated by the Soviet Union in 1961. (AP Photo, File)AP

Two years later, the U.S. and the Soviet Union signed the Limited Nuclear Test Ban Treaty, which prohibited nuclear tests in the atmosphere.

The 50-megaton Tsar Bomba “far surpassed the largest explosion the United States has ever conducted — a 15-megaton ‘Castle Bravo’ hydrogen bomb detonated on Bikini Atoll in 1954,” the wire service Reuters wrote Friday when it published the video footage and photos of the explosion.

Watch the video of the Tsar Bomba nuclear test.

— Douglas Perry

dperry@oregonian.com

@douglasmperry

Subscribe to Oregonian/OregonLive newsletters and podcasts for the latest news and top stories.

Read original article here.