Copper

The remarkable admission by OPEC's secretary-general, Salem el-Badri, earlier this week that with "any increase in (oil's) price, shale will come immediately and cover any reduction" in output only hints at the larger impact of light-tight-oil (LTO) going forward.

Oil markets will continue to be buffeted by Russian overtures to OPEC suggesting a desire to orchestrate a production cut-back, while uncertainty over the Fed's next move keeps markets on edge.

The Fed will upset the rebalancing of oil markets if it misreads the current sell-off as weakness in oil demand.