Whistleblower Edward Snowden has told NBC News he is "comfortable" with his actions in revealing details of the US National Security Agency's surveillance programme.
However Snowden, who is now living in exile in Russia, admitted he does feel a "sense of loss" at not being able to return to the US.
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Experts say a trial into an early Ebola vaccine shows it is safe, but did not perform as well as had been hoped.
Frequent snowfall expected across much of the north this evening and strong northeasterly winds will make it feel noticeably cooler.
A Jewish leader was forced to escape from the camp through a window last night, when he was locked in during a TV broadcast.