HARGEISA, Somaliland — If she were to meet someone from her past life, Halima Dahir Mahmoud is not sure they would recognize her. She’s lost weight and is constantly stressed. She was once a nomadic herder who would roam the Ethiopian countryside with her 200 sheep and goats, and 50 camels. Now she lives in a displacement camp on the outskirts of Somaliland’s capital city of Hargeisa.