With the country in turmoil, security forces there say they fear a resurgent ISIS may exploit a power vacuum once again. Libya has been reeling since the 2011 NATO-backed overthrow of the country's strongman, Muammar Gaddafi. By 2014, a full-blown civil war had ensued, and Islamic State fighters moved in to exploit the power vacuum, quickly seizing large sections of coastline and the city of Sirte before they were eventually driven out in 2016 with the help of the United States. But in recent months, renewed clashes between rival Libyan factions seeking control of the government have left more than 100 dead and hundreds wounded. And Libyan security forces say they fear a resurgent ISIS may exploit the power vacuum once again. NewsHour Weekend Special Correspondent Christopher Livesay reports from Libya. This story was made possible with special funding from the Pulitzer Center on Crisis Reporting.