About 400 leaders convened in New York City on September 9-11 for the Global Cities Initiative Conference. It was hosted by Redeemer Church Planting Center and Transform World Connections.
The plenary speakers were Daniel Ho, Luis Bush, Tim Keller and Vishal Mangawaldi. At the end of the conference - all the leaders in attendance signed a covenant to commit to planting gospel centered churches in their cities.
You can listen to Tim Keller's talks from the Conference by going to the Global Cities Initiative tab under "Programs" on this website. At that link, too, you can find a copy of the GCI Covenant.