Rebel fighters head for Tripoli
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Libya: Rebels on march towards Tripoli

The Libyan Government has vowed to "fight until the end" as it tries to halt a rebel advance on Tripoli.

Gun battles have erupted in several parts of the capital over the past 24 hours.

On Sunday morning the main rebel forces got within 17 miles of Tripoli, and clashed with pro-Gaddafi forces. They were then forced back a few miles.

The BBC's Rupert Wingfield-Hayes reports.

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