It devolves upon the United States to help to motorize the world.

The United States can't be sheriff of the whole world.

I'm the president of the United States. I'm not the emperor of the United States.

We're asking what kind of world the United States wants to inhabit in 2015, and what policies it should pursue now to promote that outcome.

We've sent a message to the world that the United States is not like the terrorists.

It was the biggest site in the United States -- probably the biggest in the world.