Elias Muhanna, a professor at Brown University in the US and editor of the Qifa Nabki blog on Lebanese politics, said the allegations were a "strange, unexplained aspect" of Mr Hassan's past, but had not dented his standing in the Sunni community.

BBC: Wissam al-Hassan, 2007

"One of the most fascinating aspects of Enceladus is that it's so very small as icy moons go, but so very geophysically active, " said Dr Bob Brown, from the University of Arizona, US, and team leader for Cassini's visual and infrared mapping spectrometer.

BBC: NEWS | Science/Nature | Saturn moon delights and baffles

Joining us to talk about the results is Peter Brown, assistant director of the polling institute at Quinnipiac University.

NPR: Political Junkie: Three Weeks to Pennsylvania