They have not talked extensively about what Athos considers his most recent present so Aramis has a decision (well, many decisions, really) to make. Either way, he knows Athos will not be pleased (to say the least).

"The Cardinal died," he begins, watching his friend's face for any and all signs of recognition - or anything else.

"And someone replaced him. The Comte de Rochefort. He ... quickly found his way into the King's highest regard. But he has assaulted the Queen and - "

And will kill them both - Aramis and the Queen - if given the chance, it seems.