Former News International chief executive Rebekah Brooks and David Cameron's ex-spin doctor Andy Coulson arrived at court today, where they face charges linked to an investigation into phone hacking.
Five other NotW staff were also present at the Old Bailey.
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Rain will hang over Scotland for most of the day, wind in the north and sunshine in the south.
In a tweet the president called the missiles "small weapons" and said the tests were not a concern for him.
The run is the inaugural event for the Ruth Strauss Foundation, founded by Strauss in memory of his wife who died last year.