...and Gandalf suddenly had a brilliant idea of how to win the war.

[The Saucepan Man]

Originally Posted by Kuruharan

It seems to me that by employing or (especially in my view) breeding orcs, the West would be repudiating the very Cause they are trying to uphold.

No. The Cause and the means of upholding it are separate. The West's Cause was to prevent Sauron's victory, which would have gone against the Will of Eru. That is a just Cause and a right one to pursue. But the means by which they seek to realise it may be right or it may be wrong.