North Korea released its new propaganda video on Saturday, called “Last Chance”, showing a submarine-launched nuclear missile tearing down Washington and concluding with the US flag in flames.
The four minute video gives a short summary of the history of US-Korean relations and ends with a digitally manipulated sequence depicting a missile surging through clouds, swerving back to the earth and slamming into the road in front of Washington’s Lincoln Memorial.
The US Capitol building explodes following the attack in the video and a message flashes up on the screen in Korean, "If US imperialists budge an inch toward us, we will immediately hit them with nuclear (weapons)."
The video was released on North Korea’s propaganda website DPRK Today and shows images from the Korean War, the capture of US spy ship Pueblo in 1968 and the first crisis over North Korea’s nuclear programme in the early 1990s.
North Korea always reacts strongly to the annual South-US military exercises, which it sees as provocative rehearsals for invasion.
In recent weeks, Pyongyang has increased its rhetorical ante with near daily threats of nuclear and conventional strikes against the South and the US mainland in response to large-scale South-US war games.
On Wednesday, it warned of a "miserable end" facing Park Geun-Hye, with its artillery units standing ready to turn the presidential Blue House in Seoul into a "sea of flames and ashes."
The threats later turned personal and North Korean leader Kim Jong-Un watched a live-fire long-range artillery drill simulating a strike on the official residence of his South Korean counterpart Park Geun-Hye on Friday.
Tensions between South and North Korea have been escalating since Pyongyang carried out its fourth nuclear test in January and a satellite rocket launch a month later that was widely considered as a distinguished ballistic missile test.
North Korea’s fourth nuclear test in January saw the UN Security Council, backed by Pyongyang's main ally China, impose its harshest sanctions to date over the North's nuclear weapons programme.
North Korea has been pushing to acquire submarine-launched ballistic missile (SLBM) capability which would take its nuclear strike threat to a new level, allowing deployment far beyond the Korean peninsula and the potential to retaliate in the event of a nuclear attack.
North Korea carried out a number of what it says were successful tests of a SLBM.
However, experts questioned the veracity of those tests, suggesting Pyongyang had gone little further than a “pop-up” test from a submerged platform.