Presidential debating styles, a Vietnam War diary and the Earth's security blanket

We compare and contrast presidential debating styles in America and France.

Also, an Afghanistan war veteran takes aim at both US political parties.

Plus, the story of a diary from the Vietnam War that found its way home almost 50 years later.

And the sound of the Earth's security blanket.

(Image: Republican presidential candidate Mitt Romney (R) and US President Barack Obama (L) greet one another. Credit: AFP/Getty Images)