All the latest developments and reaction after a soldier was hacked to death in Woolwich, London, in what is being treated as a terrorist attack.
How does BBC News deal with social media content following a a major event like the Woolwich attack in London, UK?
Dozens of people, including many children, are feared dead as a huge tornado rips through Oklahoma City suburbs, flattening whole districts.
Are you affected?
A growing Latino immigrant community means the future US will look more Hispanic, but what does that mean for the country itself?
Minute-by-minute coverage of the aftermath of a tornado in Oklahoma which left at least 24 people dead.
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BBC HARDtalk will be in Ethiopia for a special programme with the US Secretary of State John Kerry