As Donald Trump turns 80, he faces a foe he can never defeat: Father Time. That’s a problem for us all

Alarm over the judgment and behaviour of the world's most powerful man, and the consequent risks to the world, can only get worse

The main Nuremberg trial ended, Winston Churchill warned of an iron curtain descending across Europe, It's a Wonderful Life received its premiere and, at Jamaica hospital in the borough of Queens, New York, Donald John Trump was born.

It was 1946, also the birth year of George W Bush and Bill Clinton, but on Sunday the current US president celebrates his 80th birthday in a style uniquely his own. Trump will stage a night of cage fighting on the once-pristine White House south lawn as part of events marking the 250th anniversary of US independence.