What do you get when you combine more than 100 heads of state, a few hundred chief executives and several thousand hangers-on in Midtown Manhattan?

Besides a traffic jam, it is the United Nations General Assembly week in New York, also known as #UNGA.

Or it’s the Concordia Summit.

Or it’s Climate Week.

Or it’s the Clinton Global Initiative, except now that event is gone, replaced this year by the inaugural Bloomberg Global Business Forum.

“I don’t even know what to call this week anymore,” said Valerie Keller, head of the Beacon Institute, a division of EY, the accounting firm. “It’s everything.”