Samantha Power

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.

Hardtalk can also be seen on BBC News 24 at 04:30h & 23:30h.