There is also this place on 46th & 1st & the 130 diplomatic missions.
Not to mention the fact NYC also hosts a very large stock exchange which businesses from all over the world.
Then lets add the 12.5m international visitors that arrive each year.
Just a few reasons.
fdd must be a really dogshit company. they hire analysts that don't understand why the mayor of one of the largest cities in the world that is one of the largest hubs for international business and travel, and is home to the UN, would have an international affairs staffer.