The fighting has knocked out most power stations in the city and crippled Tripoli’s main airport.
- by Ahmed Elumami
Far from vanquishing the extremist group and its associated "franchises", critics say, US policies in the Middle East appear to have encouraged its spread.
- by Nabih Bulos
Libya's government has declared a state of emergency in the capital Tripoli as the death toll from fighting continues to climb.
US forces have killed "two terrorists" in an air strike in south-western Libya as part of efforts to deny militants a safe haven in the country's vast desert.