METALS-London aluminium falls for fifth day as Rusal fears ease

(Adds broker comment, updates prices) BEIJING, April 25 (Reuters) - London aluminium dropped as much as 1.6 percent on Wednesday, retreating for a fifth straight session as the softening of U.S. sanctions on Russian producer United Company Rusal continued to weigh on prices. The metal has now slipped by around 13 percent from a high of $2,534.50 on April 23, the day the United States gave U.S. customers of Rusal more time to comply with sanctions. Most other base metals also fell o