Who will lead the world in the face of these challenges?

There will remain, however, a critical need to lead the world into action.

"This is really below the level of the country leading the world now."

America must continue to lead the world we did so much to make.

"I would like to see American technology leading the world," he said.

Although 200 years ago it was leading the world in this field!

To lead the world in the environmental performance of roads.

If Americans don't believe that this country will lead the world in the 21st century, it won't happen.

That must change, as we lead the world on these issues.

But we still lead the world in the production of food.