A top al Qaida leader in Yemen has blamed US President Barack Obama for the recent deaths of two hostages during a failed rescue attempt.
Nasr bin Ali al Ansi's video message, obtained by Site Intelligence, is the first comment by al Qaida following the deaths of Luke Somers, a British born American, and South African Pierre Korkie.
Al Ansi said he warned the US against such attempts after a first failed rescue operation in November.
He accused Obama of showing carelessness for the life of an American citizen and claimed the raid "caused things to go in a completely different way than we wanted".
US President Barack Obama will welcome Prince William in the Oval Office during the Duke and Duchess of Cambridge's whistle-stop trip to America, the White House has announced.
The Duke is making a solo day visit to Washington DC to discuss the fight against illegal wildlife trafficking at the World Bank.
A spokesman said Mr Obama welcomed the Prince’s work in a "global fight" he described as "both a national security threat and a devastating environmental problem" and was keen to host him at the White House.
The President looks forward to thanking the Duke of Cambridge for the hospitality shown to him by the royal family during the President’s recent visits to the United Kingdom.
This visit underscores the special relationship between the United States and the United Kingdom.
Vice President Joe Biden will also host William for a separate meeting in the White House as the Duke makes his first visit to Washington, DC.
The pregnant Duchess will remain in New York for the duration of the three-day trip.
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President Barack Obama is "concerned and disappointed" at the violence that broke out after a grand jury decided not to indict the police officer who shot dead a black teenager in Ferguson, a White House spokesman said.
"We are all deeply worried and disappointed - and concerned about the violence, any sort of violence and that's why the President went out and spoke about it last night, spokesman Eric Schultz said.
"Again I would remind you the vast majority of protests in Missouri and around the country were peaceful and constructive".
Obama was delayed leaving the White House for Chicago in order to get a briefing about the situation in Ferguson from Attorney General Eric Holder, Schultz added.
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President Barack Obama has said that Ebola "will be defeated" but added that the world had to "stay vigilant" and be led by scientific knowledge rather than fear.
He emphasised that only two people had contracted the disease on US soil, and that both have now recovered.
He said US volunteers who go to West Africa should be "applauded, thanked and supported".
US President Barack Obama has paid tribute to the Americans working to control the Ebola outbreak in West Africa, noting that their work is "starting to have an impact".
He said he had spoken to some of the workers at the forefront of the effort who reported "some progress in Liberia".
"We don't want to discourage our healthcare workers from going to the frontline," he said, adding that the US "needs to provide support" for them when they return.
He said that Americans are "doing God's work over there" and that they must be "applauded".
President Obama has described the situation in Ottawa as "tragic" after an attack left a soldier dead.
Mr Obama said: "Just two days ago a soldier was killed in an attack...we now know a young man was killed today.
"We don't yet have all the information on what motivated the shooting, if this was the work of a broader network or plan or an individual that chose to take these actions."
He added: "I've very familiar with that area and I'm reminded of how warmly I was received and I'm obviously very shaken by it."