Supported their views on slavery -APEX
Iron Curtain: A term coined by Winston Churchill about the Soviet hold on Eastern Europe
Truman Doctorine: <span>principle that the US should give support to countries or peoples threatened by Soviet forces or communist insurrection.
Marshall Plan: Giving supplies and loans to struggling nations (Notably recovering Germany) to help them build up</span>
I would have to say that Justinians empire was weak after being split into. He also faced criticism for the rise in taxes due to the war effort.
Im pretty sure its b. establish an international organization dedicated to peaceful resolutions of conflicts