(Bloomberg) -- Nickel rose to the highest in almost two years, as reduced mining quotas in major producer Indonesia and a global sulfur shortage tighten the supply outlook for the battery metal. Most Read from Bloomberg Futures in London have risen about about 7% since the start of the Iran war, which is driving a surge in prices of sulfur — a key reagent used in processing — and fueling concerns over disruptions to global mining, including mixed-hydroxide precipitate production in Indonesia and copper ...