We know that these new authorities have played an important role in disrupting terrorism plots and bringing terrorists to justice.

Eames agrees, and they foil the terrorism plot in progress.

On Wednesday, Mr. Giuliani stepped up his criticism, pointing to two domestic terrorism plots the authorities have recently reported they uncovered.

The software led to dead ends in connection with a 2006 terrorism plot in Britain.

Network executives decided the terrorism plot was too emotionally charged for a country still in shock.

The announcement of another suspected terrorism plot has not surprised many Britons, who are used to regular warnings from the authorities.

It was Mr. Bush's first public political address since news broke last week that the British had disrupted a major terrorism plot.

But the agent did not pursue the matter, since he did not see any connection between the two and any terrorism plots.

The investigators are also looking for any hints that the four bombers had links to two terrorism plots thwarted last year by British authorities.

This would not be the first instance of Britons involved in suicidal terrorism plots.