Examining a pro-Gaddafi tank destroyed in Libya

As battles between pro-Gaddafi forces and rebels continue, it has emerged that British authorities are planning on the basis that air operations over Libya will last at least six months.

Air strikes are being used by an international coalition to enforce a UN-mandated no-fly zone over Libya in an effort to protect civilians from attack.

The BBC's Tim Willcox has been taking a close-up look at a tank destroyed in a recent strike near the town of Ajdabiya.