I would say BOTH primary AND secondary,
hope this helps :)
D. Berlin
On 20 April 1945, Hitler's 56th birthday, Soviet artillery of the 1st Belorussian Front began shelling Berlin and did not stop until the city surrendered.
Answer: 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.
Explanation: World War II ( 1939- 1945) saw the formation of an alliance to possess a brand new world order. The alliance was formalized in 1942 by the Declaration of the United Nations.
China and the Soviet Union threatened to intervene if the United States continued to apply its military might on behalf of the south Vietnamese.