As Europe prepares to mark the 80th anniversary of VE Day, the YouGov polling also showed large majorities felt that events during and before the second world war were relevant today and must continue to be taught to younger generations.
Between 41% and 55% of respondents in the five European countries polled: Britain, France, Germany, Italy and Spain, said they thought another world war was very or fairly likely within the next five to 10 years, a view shared by 45% of Americans.
Majorities of 68% to 76% said they expected any new conflict would involve nuclear weapons, and between 57% and 73% also said a third world war would lead to greater loss of life than in 1939-1945. Many (25% to 44%) believed it would kill most people in the world.