This is the primary duty of the Elected President. Probably the only executive duty he is expected to perform in a time of great crisis. The rest of his roles are mainly ceremonial and rubber stamping of what ever the govt wants him to stamp.
So, how important and effective will an Elected President hold himself as the last man in the defense of the nation’s reserves? It may be useful to understand what is a rogue govt to start with. A rogue govt is not just a bunch of rogue politicians, all 87 of them in Parliament at most. A rogue govt is not just all 87 MPs plus all their crony party members.
A rogue govt, if it is called a govt, must be all the civil servants, military and police personnel in cahoot with the ruling party. Only then can a rogue govt be formed to capture all the powers of a country and run the country as it likes, and to empty the treasury.
In the face of a rogue govt presenting the Elected President and his team of Presidential Advisers with an ultimatum,, and the rogue govt simply says, sign on the dotted line, what can an Elected President do? Can he say no?
Then again, it is unlikely that a rogue govt can be formed and get to that stage when all the civil servants, military and police personnel are with the rogue govt to do its biddings. An Elected President can only be effective if he can preempt the whole development, before a govt shows its greedy face that it is a rogue govt, and still has the civil servants and uniformed men on his side.
The critical point is when and how would the Elected President know that he has to act? Would he act if say an alternative party wins the majority in the next election to form the govt? Would the EP decide at that moment when a new govt is formed, that it is a rogue govt and call in the troops? Or would he wait till the day when the rogue govt reveals itself by asking him to sign on the dotted line?
To be effective, the EP must jump the gun. If not, he will not stand a chance when the day comes.