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But now with the addition broadcast on Radio 4, here's Kate Aide.

Today, what keeps the fighters in Libya going, risking their lives when perhaps they don't really

have to?

We hear of living as a prisoner in your own flat with young children in the middle of the Syrian

revolution. The confusion of how to vote

after Tunisia's Jasmine revolution, and why the Asian tsunami has been good for the

orangutans of Sumatra. has been a fortnight a fortnight since the forces of the new interim government in Libya

launched their final assault on the coastal town of Sert.

As the fighters went from building to building this week,

trying to flush out the last remnants of the Gaddafi loyalists,

their losses continued to rise.

Jonathan Head was at the start of the battle for Sert, watching the volunteer fighters of the Libyan Revolution.

Many of them had no military training, but they were willing to risk all.

He reflects on what's driven them and finds

echoes of similar feelings from earlier battles for the same land.

It was the opening day of what we now understood was the final battle for cert.

The road running south of the town was packed with tanks, trucks and fighters.

The air shook with the blast of guns and mortars.

...