Regardless of whether it was supposed to  be "Gambia", "Zambia" or "Namibia" Trump either a) can't read well - we already know this - and he just flubbed it,  or  b) there was a typo in his remarks in which case his staff are incompetent - we know this too - or he lacks the knowledge, insight and indeed the intelligence to be able to auto-correct on the spot. Alas, we know those to be true as well..... 

Bottom line is that the US has a semi-literate President who (at best) lacks intelligence and insight and is woefully ignorant of world affairs. And he will never get any better because a) he doesn't care and b) he surrounds himself with incompetent sycophants.