What do you think were the unstated editorial policies of yellow journalism?

to create news rather than document it, to sensationalize events by distorting truth, to exploit the public's fears, to manipulate the public's perception of events; to write articles that sell newspapers to advance the newspaper publisher's political views.

probally   a few days after there called

nations must cooperate to bring about and maintain world peace.

nations must not wage wars or commit war crimes in a desire to control other nations.

i think i know which options you have but if these aren't options let me know