06:05 UK time, Tuesday, 11 March 2014
The BBC's Mark Mardell in Washington says that the chances of a diplomatic solution to the Ukraine crisis appear to be receding.
The head of the US Senate intelligence committee accuses the CIA of improperly accessing computers used by congressional staff amid an investigation.
A man who spent more than 25 years on death row in the US state of Louisiana walks free from prison after his 1988 murder conviction is overturned.
Dallas Seavey wins the Iditarod, the 1,000 mile (1,600km) annual sled dog race across the US state of Alaska, for the second time.
Ahead of April's election, separatist Quebec Premier Pauline Marois says an independent Quebec would have no borders or tolls for Canadians.
About 4.2 million Americans have signed up for private health insurance through marketplaces set up by President Obama's health law, officials say.
Are robots and reading helping the city take on Silicon Valley?
Fans bring Veronica Mars back to the big screen
Has Russia anything to fear from US sanctions tool kit?
Snowden and Assange top billing at Texas tech festival
How the US president has handled world uprisings
Can teaching parents to chat to their babies reduce inequality?
Should the NFL ban the 'n-word'?
The town that wants more nuclear waste under its ground
US photographer visits Syrian refugees in Jordan
Is watching television via the internet illegal?
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