That grim statement was the same he had given Anakin before their duel on Mustafar. There's no mistaking the grimace on Obi-Wan's face at that thought.

"We talked," Obi-Wan said, confirming that no violence had taken place.

"He was alone, and I stayed with him. We spoke of the things he has done and will do, and the consequences."

He take a moment to cough a little and clear his throat before continuing.

"I think I understand now, as does he. He is not so much of a threat now."