Christ, people...
I'm not sure if this really counts, but Ian Smith could arguably be said to have governed two countries i.e. the Dominion of Southern Rhodesia and then the unrecognized Republic of Rhodesia.
Still the same Rhodesia. I was addressing
diffrent countries, not diffrent systems.
You can say Wojciech Jaruzelski led two "different" countries, having been President of the People's Republic of Poland and then, after constitutional changes, President of the Republic of Poland. But it's still the same country.
Didn't a couple former U.S. presidents become members of the Confederate Senate? Not sure if that counts.
The hell, man?
The topic is "led diffrent countries", not "hold offices in diffrent countries".
Had Tyler became President of the Confederate States, that would be a case.
Bernadotte could technically be considered such. He was the Prince of Ponte Corvo and had to give that up when he became the Crown Prince of Sweden.
Well, I wanted to explicitly exclude monarchs, but mentioned only personal union.