According to the passage, what was the purpose of this charter?

to identify war criminals from the Allied nations
to declare the plan to punish those who had committed war crimes
to announce a peace agreement at the end of World War II
to detail the kinds of war crimes committed during World War II

The answer to your question would be the second choice; "To declare the plan to punish those who had committed war crimes"

Explanation:

In the passage it states that the "International military tribunal was established  for trial and punishment of the major war criminals of the European". Which leads to the second answer choice matching the passage.

I Hope this Helps!!!

To declare the plan to punish those who had committed war crimes

c. have a great day ~ma.tiah