Libyan rebels have advanced from the western port of Misrata towards the capital, Tripoli, breaking a government siege as fighters across the country renew their revolt against leader Moammar Gaddafi. Several rebel units on Monday pushed the front lines west from Misrata to the outskirts of Zlitan, a neighbouring town held by Gadhafi's forces. The two sides traded heavy rocket and artillery fire with rebels using arms seized from government weapons depots and fresh armaments shipped from the opposition stronghold of Benghazi.Meanwhile, Germany has recognized Libya's rebel Transitional National Council as the legitimate representative of the Libyan people.