The Nikkei is flat, while S&P 500 futures are up a fraction in quiet trade as oil slips ahead of US plans to detail harsh new sanctions on Iran. GLOBAL-MARKETS/:GLOBAL MARKETS-Shares flat in Asia before Iran sanctions news, Nvidia results Key points and original sources are listed below.

• The Nikkei is flat, while S&P 500 futures are up a fraction in quiet trade as oil slips ahead of US plans to detail harsh new sanctions on Iran.S1

• GLOBAL-MARKETS/:GLOBAL MARKETS-Shares flat in Asia before Iran sanctions news, Nvidia resultsS2