SEOUL, South Korea — North Korea released a propaganda video on Saturday that depicts a nuclear strike on Washington, along with a warning to “American imperialists” not to provoke the North.

The four-minute video clip, titled “Last Chance,” uses computer animation to show what looks like an intercontinental ballistic missile flying through the earth’s atmosphere before slamming into Washington, near what appears to be the Lincoln Memorial. A nuclear explosion follows.

“If the American imperialists provoke us a bit, we will not hesitate to slap them with a pre-emptive nuclear strike,” read the Korean subtitles in the video, which was uploaded to the YouTube channel of D.P.R.K. Today, a North Korean website. “The United States must choose! It’s up to you whether the nation called the United States exists on this planet or not.”