In a HARDtalk interview first broadcast on 6 March 2008, Stephen Sackur talks to Barack Obama's foreign policy adviser, Samantha Power.
This week Barack Obama had a chance to take a decisive lead in the race for the Democratic nomination for President, but he couldn't take it.
Maybe it was the Hillary Clinton advertisements that stemmed the Obama tide: the ones that asked, "who do you want in the White House when the phone rings at 3 a.m.?"
Samantha Power is Barack Obama's senior foreign policy adviser.
Is his inexperience in world affairs catching up with him?
HARDtalk is broadcast on BBC World at 04:30h GMT, 09:30h GMT, 14:30h GMT, 21:30h GMT and 23:30h GMT.
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