If you are going to be in charge of a country then it might be a good idea to know something about it. Knowing the correct colours of the flag and where they go is among the absolute basics.
What next, Trump doesn’t know the words to the US national anthem? Britain ridiculed John Redwood (then Secretary of State for Wales) when he didn’t know the words to Land of my Fathers 25 years ago, but at least he was shamed into learning them.I can’t see that happening with Trump, and if he can’t admit fault with the little things then what hope do we have of him admitting responsibility for the big things?