Question:
Even so, it's worth considering that a more vigorous pursuit of Serbian war criminals, while unlikely to stop every retaliatory killing, might nonetheless send a signal that the world believes justice to be a substitute--not an instrument--for revenge.

Does it follow that "Pursuing Serbian war criminals more vigorously would help."?
Answer:
yes

Question:
Madison, 1 Cranch 137, 177 (1803) (It is emphatically the province and the duty of the judicial department to say what the law is).

Does it follow that "The judicial department has the duty to say what the law is."?
Answer:
yes

Question:
She was the most vocal of all of them.

Does it follow that "She was angry and the most vocal out of them all."?
Answer:
it is not possible to tell

Question:
Or at least, we'll be thinking occasionally about the betterment of these fine institutions.

Does it follow that "Occasionally, we'll also be thinking about cats."?
Answer:
it is not possible to tell