Japanese stocks opened lower on Monday, with the Nikkei 225 index falling 2.2% in early trade. The decline was attributed to ongoing concerns surrounding the Iran war and the subsequent impact on global energy costs.

The broader market sentiment was also affected by volatility in chip-related stocks, which saw significant drops. Investors are closely monitoring geopolitical developments and their potential to disrupt supply chains and economic stability. Higher energy prices can also increase operational costs for many companies, impacting profitability and investor confidence. The market's reaction suggests a cautious approach from investors as they assess the evolving economic landscape.