Officials in Vienna and Washington say they expect the report to include a number of worrisome developments besides the news about the centrifuges.

To environmental and safety advocates, the extension of the auto arms race from sport utilities to pickup trucks is a worrisome development.

The days leading up to the policy meeting were peppered with worrisome developments for the economy.

And now law enforcement officials say they have seen another worrisome development this year.

Continued sales by North Korea would be a worrisome development for the United States.

And in what might be a more worrisome development for the industry, even the continued operation of some existing reactors is not assured.

And in the mid-1990's, there was another worrisome development.

That will be an important trait in the years ahead, for there have been some worrisome developments.

The spread of chemical weapons to the third world has been a worrisome development for the West.