The only way corruption like this can be defeated by a president who is different from other leaders who have served in the past, is if the citizens of that country can fully support and stand by their president. If other bad politicians sees that majority of the citizens are against corruption, I think it will be tough for them to go against the president.
Like in South Africa, it was easy for Nelson Mandela to fight for good governance because he was fully supported by other citizens of South Africa .
is it is it does not need to support a President before president is a good admission or take it as an in any fight because the president control everywhere it can use military or false to do anything I want to do without the citizen of the country order or arrangement so war only escalate when it get worst a country