By Olivia Le Poidevin GENEVA, May 1 (Reuters) - The cost of sending some aid to Sudan - the world's largest displacement crisis - has more than doubled due to the Iran war, as shipping disruption pushes up costs and delays the delivery of relief, the U.N. refugee agency said on Friday. Heightened insecurity around key Gulf shipping routes, including the Strait of Hormuz, as well as congestion at ports, rising fuel prices and higher insurance premiums have all hampered the delivery of aid, particularly in Africa, the agency said.
