Why does Toulon choose to put forth Gallimard's choices and opinions to his superiors in intelligence instead of his own?

Toulon knows they are at a sensitive point politically, and makes the decision to put Gallimard on the line rather than himself. He know that if Gallimard is correct in his assumptions involving the Chinese, they can all celebrate and revel in it, but putting Gallimard's name out cuts down the risk of backlash for Toulon.