What argument is franklin
d. roosevelt making in this excerpt from his "four freedoms" speech?

Franklin D. Roosevelt was performing the " Four Freedom" speech through the time of the world war which was a period of suffering between Americans. He is declaring that Americans should not accept that they are totally safe from the war and should be prepared to make certain deductions to defend not only the United States of America but also the foundation of the world. Roosevelt is also making clear that if Germany happens to win the war the American government may fall.

in june, we will have been married for eighteen months. (i am assuming this is what you want? the sentence, as you have presented it, is grammatically incorrect--   you want it corrected, yes? )