To acquire the Phoenix Force at any cost and return it to the Empire.

[He sounds a strange mixture of methodical and sullen when he explains it. Even if he's working with Kate and the others, he hasn't had to explain this at length yet. But his feelings regarding it haven't changed.]

That included betraying the Avengers. The Supreme Intelligence then viewed Earth as a threat, as that is the cause for the Force heading there ... multiple times. So it was time to destroy it. That is when I realized my mistake.