Mao regularly swam in the Yangtze to prove that he was still perfectly fit. Putin rode a horse bare-chested and performed some judo throws, if necessary with the horse, and two weeks ago David Cameron rescued a sheep that had got stuck.
For a moment I thought it was a publicity stunt. It could have been conjured up by North Korea’s Kim Jong-un.
But in the case of David Cameron you can be sure it’s not staged. David always looks slightly surprised, as if he’s wondering: How in heaven’s name did I become prime minister? I’d forget about government affairs too if I were sharing a bed with Samantha.
After she was ousted, Margaret Thatcher only had one job: ex-PM. She continues to elicit extreme reactions from both supporters and opponents. But you can be sure she would have addressed Kim Jong-un like a schoolboy playing soldiers a bit too enthusiastically in a neighbour’s garden
So who was her secret weapon?