Protesters interrupted a US Senate hearing where Deputy National Security Adviser John Brennan testified on his nomination to be the director of the CIA.
The protesters were escorted out, after Senator Dianne Feinstein asked for the room to be cleared. The activists were believed to be demonstrating against US drone strikes in Yemen and Pakistan.
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The world is facing a "global health emergency", according to the World Health Organisation (WHO).
A 25-year-old man has been arrested in Newport, South Wales, in connection with the Parsons Green terror attack, Scotland Yard said.
A milder night ahead with some cloud low enough to be misty in places.