Authorities in Britain are reportedly preparing a plan for a possible war with North Korea.
Tension between the United States and the secretive country has been escalating in recent months.
Sources cited by the Daily Mail Online claim that Armed Forces officials have also been putting plans in place to cover the eventuality of open war.
One of these plans is believed to involve sending the HMS Queen Elizabeth - the newest aircraft carrier in the ranks - to the Korean Peninsula.
An army official told the paper the UK would be part of a global coalition against the country, and would see what support it could provide.
The preparations come amid an escalation of the war of words between Kim Jong-un and Donald Trump.
The US President said that only one thing will work when it comes to dealing with North Korea, while the regime in Pyongyang has constantly warned it will attack if it feels threatened by America.