The President was having nothing of what the city of New York was doing. With their intent to secede, it was clear that a state of war was about to exist. However, these were still Americans there, and he didn’t want them all to be punished for the crimes of a select few crazies. As such, he sent an aircraft carrier out of Norfolk to help evacuate anyone who wanted. As luck would have it, the entire Yankee team chose to leave.
New Yorkers are a stubborn bunch though, they weren’t going to let this go quietly. The rioters started to peter out, without electricity there was difficulty getting around the city since the subways were out of commission. As people left their office buildings and apartment high rises, they realized they would have many flights of stairs to climb if they wanted to return. Because of this they often just left the city completely. Buildings which once held thousands of people on a daily basis stood empty.
Those buildings, empty of people and without power soon began to crumble. Hurricane season is in full force and even though a major storm rarely hits the city, a category 2 hurricane made landfall on NYC. Some of the buildings, empty of weight and without any power to them began to sway. One or two fell over in the storm. The official count is unknown because rebels used the storm as a cover for their counter assault against the acting government of the country of New York.
While it is not known officially who fired the missiles, the official story is radical American Loyalists attempted a coup within a coup to regain control of the island of Manhattan. It was mostly a failure and ultimately resulted in the first full scale war on the continental United States since the Civil War. (Unofficially, the CIA funded, and directed the strike in an attempt to re-unify the nation).
The young new nation is about to be in the midst of a war with the most powerful country on the planet. Even if y2k crippled both sides, most of the military hardware is 40 to 50 years old and in perfect working order. There’s little New York can do to prevent their own destruction.
Listen to the song, it’s better that way: