TRIPOLI (Reuters) - Heavy black smoke rose over southern Tripoli on Thursday after rival militias exchanged artillery and rocket fire in a battle over the Libyan capital's airport that has killed around 50 people in nearly a fortnight of fighting.
Sporadic blasts echoed across the city since the morning in clashes that have deepened fears of post-war Libya becoming a failed state, with a fragile government unable to control heavily armed brigades battling for power.
