Wiretaps 'foiled terror attacks'
And if there had not been wiretaps...?
The US director of intelligence has said wiretaps played a significant role in stopping bomb attacks by suspected Islamists in Germany last week.
Michael McConnell told a Senate committee eavesdropping had revealed that the suspects had obtained explosive liquids.
He said Congress should not restrict the programme.
In August, a temporary bill was adopted allowing eavesdropping on foreign terror suspects without a warrant.