Stocks have opened lower, with the Nikkei stock index falling below a key level. This decline is attributed to overnight losses on Wall Street. High US Treasury yields are also a factor in the decrease.

The Nikkei stock index has dropped below the 70,000 line. This movement is a result of tracking the previous day's losses on the US market.

Further information on the stock market decline is available from the source, including any additional details on the current state of the market and the factors contributing to the decrease.