At the start of President Obama's interview on the "Late Show with David Letterman," the host asked his guest whether he wanted to say anything to the empty chair next to him.
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One of Britain's leading tour operators, Thomas Cook, has joined a growing push for changes to the way tourists receive security warnings.
Thunderstorms affect mostly southeast England on Thursday with a mixture of sunny spells and showers into the afternoon.
The government has been forced to release a full report into the impact of fracking, after initially handing over a heavily-redacted version