When blasts rolled across Dubai as air defences intercepted Iranian missiles overhead, Marion Kuria froze as a tremor ran through her building.Then, like countless African migrants in the Gulf, she went back to work, driven by a need for income and with few alternatives to turn to.The 36‑year‑old Kenyan, who has spent seven years in the city's retail sector, told AFP she felt the shock "in her spine"."The anxiety was extremely high," she said.