The separation of powers was that power should be separated between various people or institutions in order to ensure that the government is fair. If the King controls the courts then the courts just act according to the King's will, even if the King does something that is illegal which means that the King is a tyrant and an absolutist.
The Germans sank a British ship which had American passengers. This was the first step. After this due to the unrestricted submarine warfare more US ships were sunk by German U-boats.
Answer: Under international humanitarian law, intentional attacks on civilians, or attacks that do not distinguish between military targets and civilians, are prohibited under all circumstances.