Strait of Hormuz Reopens; Indonesian Rupiah Surges

The Indonesian Rupiah experienced a notable strengthening against the US dollar, closing at Rp 17,708.5 per dollar on Monday, June 15, 2026. This gain of 151.5 points, or 0.85 percent, reflects a positive shift in market sentiment following the preliminary peace agreement between the United States and Iran.

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External sentiment President US Donald Trump and Deputy Foreign Minister of Iran said they have reached an initial agreement to end the war and resume traffic through the Strait of Hormuz.

Market observers, such as currency and commodity analyst Ibrahim Assuaibi, pointed to external factors driving the Rupiah's appreciation. "External sentiment President US Donald Trump and Deputy Foreign Minister of Iran said they have reached an initial agreement to end the war and resume traffic through the Strait of Hormuz," Assuaibi stated. The agreement, brokered with Pakistan's mediation, is set to be formally signed in Switzerland on Friday.

Key provisions of the deal include the reopening of the Strait of Hormuz, a critical chokepoint for global oil and gas supply, within 30 days under Iranian arrangements. US President Donald Trump also announced the end of the US naval blockade on Iranian ports. The agreement also establishes a 60-day ceasefire period during which broader negotiations will take place concerning Iran's nuclear program and sanctions relief.

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The Strait of Hormuz will be opened 'free of charge' and that the US naval blockade of Iranian ports will also end.

The conflict had significantly disrupted global energy markets, with millions of barrels of oil and gas supply lost since the war closed the Strait of Hormuz for over three months. Investors are now closely watching the speed at which Middle Eastern producers can resume production and exports, and whether increased shipping activity will follow.

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the draft agreement calls for the reopening of the Strait of Hormuz within 30 days under Iranian arrangements.

Additionally, the E4 countries (Britain, France, Germany, and Italy) have expressed readiness to lift sanctions on Iran, contingent on its nuclear program measures. The market's attention this week will also focus on central bank policy announcements, particularly from the US Federal Reserve, amidst ongoing discussions about interest rate hikes by institutions like the Reserve Bank of Australia and the European Central Bank.

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broader deal will be negotiated during a 60-day ceasefire period.