*sigh* If we're going to repeat this debate:
What is straight up (EU) canon is that originally, Mon Mothma, Bail Organa, and Garm Bel Iblis were the three founding leaders of the Rebel Alliance, forming essentially a leading triumvirate with equal power. Mothma and Bel Iblis often clashed because even though all three were Senators, Mothma was fundamentally a career politician whereas Bel Iblis was fundamentally a military commander; Organa was generally the one who smoothed things out.
And this worked pretty well until Organa got vaporized with Alderaan, at which point Mothma heavily concentrated power in herself. This led to a confrontation in which she very explicitly kicked Bel Iblis out of the Alliance for refusing to send his troops on a suicide mission in deference to her self-appointed authority as sole leader:
That is a direct quote from the canon short story "Differences of Opinion", published in Star Wars: The Last Command Sourcebook.
Mothma pushed ahead with the attack she wanted after Bel Iblis departed, and the result was a bloody disaster for the Alliance. Just as Bel Iblis had said, the Imperial base on Milvayne was a heavily defended Ubiqtorate base and the forces the Rebels were able to muster for the attack were simply insufficient. After this Bel Iblis continued to fight the Empire on his own, independently of the Alliance and then for six years into the New Republic Era.
The ultimate resolution of this in the Thrawn books held that Bel Iblis rejoined the New Republic when he was ultimately convinced that Mon Mothma had good intentions. NOT that he was wrong about her grabbing power for herself, but that it was forgivable because the *reason* she was grabbing power was not simply ambition for herself.
So basically, Bel Iblis was canonically wrong that Mon Mothma wanted to simply replace the Emperor with herself. He was, however, absolutely correct that she had appointed herself sole leader of the Alliance after Organa's death, and that she was literally willing to send Rebel forces on a suicide mission for no gain other than, "If I cancel the mission, I have to admit I was wrong. That's not acceptable, they're just going to have to die for the sake of my authority."
Aside from the direct quote I provided, you can confirm that it's not just me saying this by looking at the relevant sections of the Wookiepedia articles about Mon Mothma and Garm bel Iblis.
What is straight up (EU) canon is that originally, Mon Mothma, Bail Organa, and Garm Bel Iblis were the three founding leaders of the Rebel Alliance, forming essentially a leading triumvirate with equal power. Mothma and Bel Iblis often clashed because even though all three were Senators, Mothma was fundamentally a career politician whereas Bel Iblis was fundamentally a military commander; Organa was generally the one who smoothed things out.
And this worked pretty well until Organa got vaporized with Alderaan, at which point Mothma heavily concentrated power in herself. This led to a confrontation in which she very explicitly kicked Bel Iblis out of the Alliance for refusing to send his troops on a suicide mission in deference to her self-appointed authority as sole leader:
"Do you understand me? I will not send my troops on a suicide attack. And I do not recognize your authority to order them to. I did not vote to place you in charge of the Alliance, and if Bail did, then he was gravely mistaken."
"Senator Bel Iblis, I sincerely hope that was not an ultimatum."
"Yes, I guess it is. This attack plan is fundamentally flawed, and you just don't have the expertise to know it."
"I will not have ultimatums put to me, Senator. The Rebel Alliance will no longer require your services."
That is a direct quote from the canon short story "Differences of Opinion", published in Star Wars: The Last Command Sourcebook.
Mothma pushed ahead with the attack she wanted after Bel Iblis departed, and the result was a bloody disaster for the Alliance. Just as Bel Iblis had said, the Imperial base on Milvayne was a heavily defended Ubiqtorate base and the forces the Rebels were able to muster for the attack were simply insufficient. After this Bel Iblis continued to fight the Empire on his own, independently of the Alliance and then for six years into the New Republic Era.
The ultimate resolution of this in the Thrawn books held that Bel Iblis rejoined the New Republic when he was ultimately convinced that Mon Mothma had good intentions. NOT that he was wrong about her grabbing power for herself, but that it was forgivable because the *reason* she was grabbing power was not simply ambition for herself.
So basically, Bel Iblis was canonically wrong that Mon Mothma wanted to simply replace the Emperor with herself. He was, however, absolutely correct that she had appointed herself sole leader of the Alliance after Organa's death, and that she was literally willing to send Rebel forces on a suicide mission for no gain other than, "If I cancel the mission, I have to admit I was wrong. That's not acceptable, they're just going to have to die for the sake of my authority."
Aside from the direct quote I provided, you can confirm that it's not just me saying this by looking at the relevant sections of the Wookiepedia articles about Mon Mothma and Garm bel Iblis.