Asian shares were mixed on Wednesday, while oil prices slid to six-month lows as traders waited for the year's final policy decision from the Federal Reserve and clues on whether the central bank will cut rates next year.

Asian shares and US stock futures sink, after Wall Street suffered its biggest decline since 2011 as investors’ faith in factors underpinning a bull run in markets began to crumble.

Asian stocks open higher after turmoil on financial markets saw European and US indexes tumble following another oil price fall.