The IDX Composite in Indonesia experienced a decline of 89 points, or 1.3%, settling at 6,818 during Monday morning's trading session. This marked the fourth consecutive day of losses and the index's lowest position since early May. The downturn followed a decrease in U.S. stock futures following the U.S. military action against three nuclear facilities in Iran over the weekend. Concerns about potential retaliatory measures from Iran contributed to a negative market sentiment. Additionally, the Iranian parliament's approval to close the critical Strait of Hormuz further pressured the markets, with fears that rising oil prices could escalate domestic inflation. Persistent global trade uncertainties compounded the cautious atmosphere as investors looked ahead to the U.S. Personal Consumption Expenditures (PCE) inflation data, which is expected later in the week and could influence the Federal Reserve's monetary policy decisions. All sectors across the IDX Composite traded lower, with property, utilities, and financials suffering the most significant losses. Notable declines were observed in companies such as Telkom (-2.3%), BNI (-1.7%), BRI (-1.6%), Astra International (-1.3%), and Bank Mandiri (-1.2%).