North Korea has complained to the United Nations about an upcoming film based on a plot to kill its leader Kim Jong-Un, starring Seth Rogen and James Franco.
'The Interview', due to be released later this year, tells the story of a American television show host and his producer who get an interview with the Jong-Un, and are then hired by the Central Intelligence Agency (CIA) to assassinate the North Korean leader.
North Korea accused the United States of "encouraging and sponsoring terrorism" if it allowed production to go ahead.
In a letter to UN Secretary-General Ban Ki Moon, North Korea's UN ambassador Ja Song Nam says the movie "involves insulting and assassinating the supreme leadership".
"To allow the production and distribution of such a film on the assassination of an incumbent head of a sovereign state should be regarded as the most undisguised sponsoring of terrorism as well as an act of war," Ja added.
He called on the United States to take "immediate and appropriate actions" to ban the production and distribution of the film.
Actor Rogen made light of North Korea's anger on Twitter.
It is not the first time the country has been offended by insults towards Kim Jong-Un.
A salon owner in Ealing was involved in a "scary encounter" with two North Korean officials in April over a hair advert mocking their leader.