A service is being held in Washington to pay tribute to Neil Armstrong, the first man to walk on the Moon.
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In an open letter to Jeremy Corbyn, senior Labour figures said Labour needed to present an alternative to the Tories' "destructive Brexit".
Six people have been injured and a man has been arrested after an alleged noxious substance attack in east London.
The US first lady travelled without her husband to support the Invictus Games, which were founded by the Prince in 2014.