How can I fix this short essay?

The United States once warned the triple entente what would come if such a document was set forth. The clairvoyance of this president was thought to be a mad ramble. how foolish they were the restrictions alone would start great strife. But the debt was simply the straw that broke the camel’s back. The German people enraged were drawn into a frenzy by a man said to be of the people. If only they saw the pain, he would bring on the world. Through there following of the green beast they would feast on the world around them to blinded by their fear to repent. The Allies eyes also blinded by fear would willingly engorge the green monster in a foolish attempt for peace. These great powers would soon see the Rhineland brought to power. The demon turned its eyes on to them. They see a free peaceful nation sliced in two and swing imaginary swords at the dark devourer. It took the death of a great and an attack on a far-off nation of the people for the creature to be recognized as a true cancer that must be cleansed and so began a warned war that took many and gave few back.

Don't start sentences with how or but. it needs commas. and some of them sound like incomplete sentences/ thoughts. Attach some of the sentences together.

Explanation:

1. read the following excerpt from franklin d. roosevelt's "fireside chat 19":

on the other side of the picture, we must learn also to know that guerilla warfare against the germans in, let us say serbia or norway, us; that a successful russian offensive against the germans us; and that british successes on land or sea in any part of the world strengthen our hands.

remember always that germany and italy, regardless of any formal declaration of war, consider themselves at war with the united states at this moment just as much as they consider themselves at war with britain or russia. and germany puts all the other republics of the americas into the same category of enemies. the people of our sister republics of this hemisphere can be honored by that fact.  

the true goal we seek is far above and beyond the ugly field of battle. when we resort to force, as now we must, we are determined that this force shall be directed toward ultimate good as well as against immediate evil. we americans are not destroyers — we are builders.

analyze the effectiveness of this excerpt. how does it function within the speech as a whole? how does the structure of the excerpt to convey the speech's purpose and key points? support your argument with evidence from the speech. (10 points)