Time to be a statesman not a showman, Donald
Republican presidential candidate Donald Trump has managed to test the tolerance of not only the American public, but he has also sparked open warfare within his own party, too.
From lambasting the mother of a war hero to humiliating the mum of a crying baby, Mr Trump has produced more cringe-inducing moments than any other contender in living memory in the race to become the most powerful person in the world.
Embarrassment we can live with - but volatility and unpredictability at a time of such global instability is of far more immediate concern. Yesterday, Mr Trump was alleged to have asked an advisor three times why the US can not use its nuclear weapons. A spokesman for Mr Trump denied the claim, but the fact that it could credibly be made is a worry in itself. Yesterday also saw North Korea fire a missile which landed in the sea off Japan - an incident that prompted an emergency UN meeting.