I'll try.
Sept. 1st News leak out of University Library in Leuven being burnt.
During first week of September outrage follows. Roosevelt makes passionate speech in front of Congress. He calls on USA to intervene in conflict. Reluctantly, Congress agrees. US Navy mobilized.
End of September, Navy is ready. USS South Carolina and USS Michigan, esorted by four cruisers of Tennessee class and various auxiliary vessels set sail on November 1st, while the rest of fleet prepare.
They reach European Coast in two weeks. German government notified that US demands immediate cease fire. Representatives of all powers are invited to Washington to discuss peace terms. Roosevelt puts his 10 points demands, among which are respect of neutrality, freedom of seas and respect of sovereignty of nations. His demands are hailed by Entente, scorned by Central Powers.
US fleet arrives to North Sea and request is sent to allow approach to Antwerpen. Germany remains quiet.
German fleet sails out and demonstrates in front of American fleet. As Royal navy approaches, they are warned off by Americans in order to avoid incidents. Under pressure of US and Royal Navy, Germany retreats fleet.
Diplomatic impasse goes on for weeks with mutual accusations flying around from CP and Entente representatives.
December 15th America finishes mobilization of troops. Representatives of Denmark and Dutch are invited to White House and asked if they will allow US marines to be deployed to their territory to protect them against potential German aggression. They agree.
At Christmas eve soldiers spontaneously get out of trenches. It becomes more massive than in OTL. Governments get caught in this and agree to American demands. Negotiations start.