‘Britain, America’s top European ally, could formally refuse Donald Trump’s call for help in waging war against North Korea, so long as Kim Jong-un does not strike Hawaii or the US mainland.

Britain’s membership of NATO does not automatically oblige it to participate in a conflict between Trump’s America and Kim’s North Korea, even if the latter attacks US military bases in the Pacific.

Although Article 5 of the North Atlantic Treaty states that an attack on one NATO member is an act of aggression against the entire military alliance, the application of this provision is limited only to attacks on member states’ territories in North America, Europe and the Atlantic.

Consequently, if Kim’s warheads strike US military bases in the Pacific, the US could ask for Britain’s assistance, but cannot formally compel the UK and other NATO allies to join the military efforts against North Korea.’

Read more: Could Britain avoid being dragged into a North Korean war?