East Libyan troops close on Tripoli, alarming U.N

The advance by Haftar's Libyan National Army (LNA) force, which is allied to a parallel administration based in the east, escalates a power struggle that has splintered the nation since the overthrow of Muammar Gaddafi in 2011.It came as U.N. Secretary-General Antonio Guterres departed after meeting Haftar to try and avert civil war."I leave Libya with a heavy heart and deeply concerned.