Grogg of the North
Adventurer
Well I guess the question is, what are your PC's world views? And what do their religions teach? I bet that your players put down a deity on their sheet, even if they do pay only lip service. What were the PCs hired to do in regards of the frost giants? Was it to drive them off, kill everyone, or something in between?
In D&D, a LG character can, if it is within their authority to do so, declare the frost giants guilty of <insert crime here> and execute them. Remember that an Exalted character is supposed to have a modern sense of right and wrong though.
Also, just because frost giants are "usually chaotic evil" doesn't mean they go around all days kicking puppies like cobra commander. They're probably greedy, care only for themselves and believe that might makes right. YMMV though.
Personally, I'd let the PCs debate. You may get some interesting responses from within the group (which may even lead to alignment shifts!). Plus its less work for you as the DM.
If the PCs do decide to take them prisoner or accept an oath of non-interference, I would recommend taking a look at the Book of Exalted Deeds. It has some good advice on surrendering enemies and even rules on trying to redeem evil characters. Your players could even use things like Mark of Justice or Geas to ensure that the giants follow through on their promise.
In D&D, a LG character can, if it is within their authority to do so, declare the frost giants guilty of <insert crime here> and execute them. Remember that an Exalted character is supposed to have a modern sense of right and wrong though.
Also, just because frost giants are "usually chaotic evil" doesn't mean they go around all days kicking puppies like cobra commander. They're probably greedy, care only for themselves and believe that might makes right. YMMV though.
Personally, I'd let the PCs debate. You may get some interesting responses from within the group (which may even lead to alignment shifts!). Plus its less work for you as the DM.

If the PCs do decide to take them prisoner or accept an oath of non-interference, I would recommend taking a look at the Book of Exalted Deeds. It has some good advice on surrendering enemies and even rules on trying to redeem evil characters. Your players could even use things like Mark of Justice or Geas to ensure that the giants follow through on their promise.