AMERICA'S Defcon warning level has been reduced to its safest threat level possible following Donald Trump's shock presidential election win.

The Defcon Warning System, a private organisation which monitors world events and estimates the nuclear threat against America, is now at Level 5 - its lowest possible state.

Just weeks ago the warning was accelerated to Level 3 following increased tensions between US and Russia, with insiders fearing the West was creeping closer to nuclear war.

Level 3 means US troops could be mobilised in as little as 15 minutes

But the group, made up of experts claiming to have contacts within the US security industry, have seen Donald Trump's election win as a pacifier for Russian relations.

The group wrote on its website: "The United States took a tentative step toward a more isolationist policy with its recent presidential election.