Layla Mohammed barely had time to gather her children's belongings before fleeing their southern Tripoli home when shelling targeted the Libyan capital's outskirts earlier this year. For months she moved her family between apartments as soaring rents in the crowded city exhausted her savings, eventually leaving them squatting in an unfinished building alongside dozens of other families. More than 140,000 Libyans like Mohammed have fled their homes since April, when ...