Tumult Surrounds G-8 Summit, But Bush Is Bullish on Progress

RUSUTSU, Japan -- As world leaders arrived Sunday in Japan for their annual summit, the Group of Eight is experiencing some of the greatest transformations -- and troubles -- in its history.

Prospects were doubtful for this year's big initiative on greenhouse-gas limits, amid concerns that strict emissions caps might burden the emerging nations that influence the G-8, and even harm some developed nations that are hurting economically.

In a news conference Sunday, President George W. Bush sought to dispel speculation that the summit may not be productive. "I've got a pretty good sense about when a G-8 is going ...