Sources:| Associated Press
North Korea has released photoshopped images of a US bomber and supercarrier under attack.
The move comes after the US military ordered a show of military might by flying US bombers and fighter escorts to the farthest point north of the border between North and South Korea by any such American aircraft this century.
The Pentagon said the mission in international airspace showed how seriously President Donald Trump takes North Korea's "reckless behaviour."
B-1B bombers from Guam, along with F-15C Eagle fighter escorts from Okinawa, Japan, flew in international airspace over waters east of North Korea Saturday (local time).
The US characterised the flights as extending farther north of the Demilitarized Zone, than any US fighter or bomber had gone off the North Korean coast in the 21st century.
B-1 bombers are no longer part of the US nuclear force, but they are capable of dropping large numbers of conventional bombs.
"This mission is a demonstration of US resolve and a clear message that the president has many military options to defeat any threat," Defense Department spokesperson Dana White said in a statement.
North Korea's leader, Kim Jong Un, has said Trump would "pay dearly" for threatening to "totally destroy" North Korea if the US was forced to defend itself or its allies against a North Korean attack.
Kim's foreign minister told reporters this past week that the North's response to Trump "could be the most powerful detonation of an H-bomb in the Pacific".
North Korea's state-owned propaganda wesbite DPRK Today released images of the nuclear-powered supercarrier USS Carl Vinson being bombed, and a North Korean missile hitting a US strategic bomber B-1B, reported South Korea news agency Yongap News.
The images were part of a video which saw Mr Trump as a "mad man", with the subtitle of the film saying: "Should F-35, B-1B and the Carl Vinson lead the US attack, they will head to the grave in that order."
North Korea has said it intends to build a missile capable of striking all parts of the United States with a nuclear bomb.
Trump has said he won't allow it, although the US so far has not used military force to impede the North's progress.